How To Make A SuperCapacitor - Step By Step

[@cb1953]

Robert, I know this is an older video, but they're all such excellence & I picked this one to comment because I get a kick out of it every time. You sir, are the greatest. Absolutely the greatest individual Ive encountered. I wish I could work along side you, that would be fantastic. I greatly appreciate your work, the simplicity in which you're able to convey the information to your audience, and I too find top humor in the things you have a good chuckle about. Despite the simplistic conveyance, your passion for the things you do in science is always very clear. Thank you for the experiment ideas and knowledge, and know that some guy in the first state of the US is thankful for what you do and finds great joy in your videos. Thank you, sir!

[@TheBaconWizard]

LOL your laughter at the achievable scale of these things despite almost no care or precision taken, is infectious. Think I'm going to have to go back over some of your earlier vids as a primer and give it a go at last. I've been merely observing for too long.

[@ThinkingandTinkering]

+TheBaconWizard good man - let me know how you get on

[@TheBaconWizard]

+Robert Murray-Smith I will do :)

[@ThinkingandTinkering]

+TheBaconWizard cheers mate

[@jimmatrix7244]

@@TheBaconWizard Well, it's been three years now? Guess the capacitor roasted the bacon wizard.

[@Zephyr-c2j]

STOP🤨🤨🤨🙏🙏🙏. Be warned… if you subscribe and try even ONE. You’re gunna get got. I have a whole kitchen slowly turning into a laboratory and a gsmall group of neighbours that are convinced I’m “not normal”. Also… your going to have (to use the Australian vernacular), a “shittonne” of fun 😂😂

[@gsf1129]

I thought no one was making videos that perfectly explained these convoluted things. It makes me happy that people are showing how to make these basic parts of very cool new technologies

[@ThinkingandTinkering]

cheers mate

[@johnhamilton4816]

New lol 😂😂

[@olliebaxter2402]

My left ear enjoyed this video...

[@ThinkingandTinkering]

that'll be the one to use then

[@danpritchett1394]

Uh, that was left? I've reversed my speakers then.

[@punker4Real]

I thought it was 1980 mono tv

[@marshalm385]

Hey guys take it easy just enjoy....lol

[@Thricenol]

I did enjoy it, very much actually. But only in the left ear.

[@LeoRikimaru]

When he announced "4 farads" it genuinely made me smile. The future looks bright.

[@ThinkingandTinkering]

awesome mate lol

[@seankelly1291]

This is one of the most important videos ever made! I am damn serious about that assertion.

[@nitrousman8882]

Damn right! Now how about this question? How do we know that the GO is actually graphene oxide? That would certainly account for why the AC does so much better, right? We really do know that the activated charcoal is as advertised. The GO....not so much. We really need a bodged together Raman Spectrometer in here!

[@daveyhi3154]

People may be wondering why you're laughing. Not many years ago a one farad capacitor was pretty much unthinkable on a practical level. To be able to make one in 5 minutes using pennies of common materials from your house is unimaginable. It's the electro-chemical equivalent of being able to make a smartphone in your tool shed for $5.

[@ThinkingandTinkering]

really nice way of putting that mate - cheers

[@earthclad6833]

You can make a smartphone In your toolshed for 5 dollars

[@junreyparacuelles]

Davey Hi his laugh was contagious. haha

[@JohnWilkinsonTesla]

Standard capacitors of that size are 1,000,000th the power.

[@ukpkmkk_2]

I remember solving physics exercises and having to restart calculating from scratch when getting a result in farrad class because it was unrealistic and when you get a result not in uF or nF you're almost certain that you've made a mistake and have to start from scratch.

[@zylascope]

It's good to watch these old videos from 2016. Full of great info :)

[@ThePoopdick63]

Your channel is giving me flashbacks to the days when BBC used to actually be educational. Thought provoking content that encourages us to explore the perpetually uncharted world of tinkering in our own garages and kitchens? We haven't had that spirit here since 1969! lol. Hats off to you sir and thank you for the inspiration. I really appreciate your enthusiasm in your presentations. It's contagious

[@Organiqintel]

This video was the spark which ignited a raging fire. (Not literally) I have watched it and shown it to so many friends. My obsession with building supercapacitors marked the start of a very wonderfully strange chapter in my life. the one thing that I was inspired to try was to use “neverwet.” As a separator on carbon fiber veil that has been lightly electroplated with either Au, Cu, Ni or Ag. using sodium silicate as both a binder, and electrolyte; when mixed with a very small amount of grapheme oxide and acetone and doing what could be interpreted as a supercritical drying process, by freezing it, and subsequently baking it @ 250-450f in a (homemade) autoclave under the highest vacuum I could generate with a couple of reversed air compressors and a refrigerator pump , the whole thing puffs up like breakfast cereal, and hardens. Technically; I believe it falls under the definition of solid state but I don’t have any collegiate education, so its highly likely I’m wrong about that…(I later realized I had made a kind of grapheme/silica aerogel) it was solid state but in regular atmospheric conditions(I live on the rainy side of the big island of Hawaii) it would melt after a few days. I also tried this as a bastard version of the “crystal battery” which has been used in the KZbin community by many, for a long time. This tiny device seemed to charge itself. Unfortunately the majority of my toiling was destroyed in the 2018 LERZ eruption which ate half of my neighborhood, and proceeded to melt a few more including the town of Kapoho, the largest eruption in the recorded history of Hawaiian islands. It also added an additional 18 acres or so to the island after filling in Kapoho bay. The lava was extremely liquid, and at one point it measured almost 4000 degrees Fahrenheit. I have been working as a guide in the ocean and on land for a dozen or so years taking tourists to get on top of and adjacent to active lava-ocean entries. I have never measured lava more than about 2700f. My point is that there’s an awful lot of elements that came to the surface in my neighborhood and have been oxidizing in different layers for the past 4 years. The lava was 120ft thick in some places(will be cooling off for the next 20 years or more)but it is porous and has seawater leaching into it. I’m wondering if the flow fields may possibly be able to hold a charge…there’s a geothermal power plant that just so happens to be surrounded by the new lava… I find it very intriguing. I have 2 children who are 3 and 5; I rarely get the opportunity to talk to anyone who has the slightest idea what I am trying to say…what do you think?

[@Candyman97]

I know I've said it before, but truly love watching your videos. Mainly because you are such a big kid!!!!😜😜

[@ThinkingandTinkering]

+Eflat Productions lol cheers mate

[@michaelmettie9430]

I don't know if I would word it that way as I wouldn't dare risking to offend him, but I would agree that RMS is having way too much fun! I'm thinking he must be single, but if not I'd like him to explain again how he exfoliates graphite in the microwave.... without getting scalped by the wife that is.

[@ThinkingandTinkering]

lol - i am married mate - there are quite a few videos on microwave exfoliation 'a' does a really good one

[@kandkcattlecompany8917]

Hello Robert, I just wanted to say I have been putting off opening a google anything, BUT I did cause I APPRECIATE all the effort and commonsense you are able to impart to anyone willing to get their hands dirty. SO>>>> Thank you for your time and efforts. GREAT job

[@johna1398]

Thank you for sharing your knowledge.

[@ThinkingandTinkering]

+John Allen cheers mate

[@your-digital-bodyguard]

I love your videos and how you share your knowledge with others. To those who criticize you in any way are nothing but complainers, not contributors.

[@livinggood5545]

I so love watching your videos. I was interested in science as a child and was learning from a teacher that reminds me of yourself. Having someone with such a infectious attitude of teaching is grand. I was transferred during my middle school years but never found a science teacher such as yourself that was so knowledgeable of his teaching as much as you. I find it is never too late to learn. Thank you so much for your videos. From across the pond Hello and have a great day.

[@ThinkingandTinkering]

hiya mate - thanks for taking the time to write and say that - awesome my friend - cheers

[@peterkemp8633]

Fantastic, love all your work and videos, your attitude is spot on, you are without a doubt contributing in no small way to making our planet and lives much improved. As your experiments prove, one guy can do some amazing things, with a little ingenuity. All the very best to you Robert and your team and everyone.

[@hunter00047]

I think you have a fantastic ethos regarding try it yourself, change the recipe etc. That is the way I have always learnt, often more with failures, but persistence is the key to success. Keep up the good work, you will make that million.

[@ThinkingandTinkering]

+Martin Counsell lol - cheers mate - what is it Edison said 1% inspiration 99% perspiration lol

[@MrJaysniping]

Thank you Robert, not for only answering my question of "how to" cleanly and clearly, but inspiring me to experiment and find tomorrows technological break-throughs thanks again great as always keep it up!

[@ThinkingandTinkering]

awesome mate - I am glad you found it useful - cheers

[@stumccabe]

Absolutely amazing that such a high capacitance can be produced so simply and cheaply!

[@ThinkingandTinkering]

i think so too

[@apexmike849]

And there was I, thinking that you'd need all sorts of clean-room conditions and highly technical and expensive processes. Thanks for that, subscribed! I shall be watching a lot more of your videos!

[@ThinkingandTinkering]

cheers mate

[@soulmasterdw]

its all about how u use basic science to do complex designs no fancy stuff required if u have the mindset and wisdom u can do anythink

[@ThinkingandTinkering]

i agree mate - well said

[@Royston622]

One of the best video's I have seen on You Tube, well done. I think that these devices will be the future of everything electronic. In admiration, an elderly, retired electronics engineer weened on vacuum tubes....;-)

[@ThinkingandTinkering]

awesome mate - cheers

[@joshbertrand5929]

RMS, you're truly one of the greatest of all time. -joshua bertrand

[@zm4710]

So touching to listen to your enjoyment upon pondering the measurements. thank you for your consideration to teach. the video was crystal clear and well done With tons of highly informative research. This is undoubtedly the best technical video I have seen in the last number of years. This was recommended and I couldn't have imagined the value. So it was quite encouraging. Funny I was searching around asking about measuring large capacitance meters and was told they did not exist. Glad that was wrong! Cheers!

[@ThinkingandTinkering]

thank you for taking the time to post and say so mate - cheers

[@techtinkerin]

I knew you were an excellent teacher the moment you said the current combinations are probably not the best so experiment.. subbed!!❤️😊

[@Alice_Fumo]

"kitchen paper, because it's easy to get hold of" good times, good times.

[@harleyson4516]

Bbbbbb

[@Алексейфолдер]

Hello, you are doing a very interesting job, but more valuable is that you share the fire of the heart. Good luck with your endeavors and good health to you!

[@craignehring]

Superb video, outstanding results Imagine banks of these to fill a building for storage of PV solar driving inverters, better yet no inverters and use the D.C.directly

[@ThinkingandTinkering]

+Craig Nehring that would be cool - get building lol

[@sreenathc]

Wow!! 4 farads in 1Sqcm!!! Discovery of your channel has been the best thing that has happened to me in the last couple of weeks. It has rekindled my childhood interest in doing science experiments. The first thing I am trying to replicate is your NASA Stirling engine but with 2 Pringles potato chip cans…not successful still as I think the rubber balloons as membranes are too hard for it, or maybe using hot water cop to heat is just not enough to make it work. Will keep trying and if successful will post here. Thanks for all the fantastic work you do 🙏🏻

[@OlfArts]

This is all new to me, I'm fascinated watching your experiments, particularly the Hemp and Graphene battery. I wonder how many businesses (big and small) have approached you? Anyway, keep up the great work, thank you from Australia.

[@fightfornowar5459]

Great...marvellous video, Mr. Murry-Smith! Love and peace to you and your beloved.

[@seankelly1291]

Thank you so much for not editing the waiting period out! LOL By the way, 3rd viewing. We all need to watch at least 3 times.

[@netsplit64]

I just want to thank you for this video! Been wanting to experiment with making a super capacitor power storage system

[@ThinkingandTinkering]

+Kevin Hughes (netsplit) cheers mate - good luck with it and keep me in touch with how it goes

[@codedesigns9284]

Four Farads is a crazy amount with only 2 plates and a few grams of materials! Mind blown!

[@Ezio-Auditore94]

Incredibly inspiring, i am so happy for finding your channel.

[@coolcolumbus]

That's awesome, sir. I am a computer student with nearly little or no knowledge of chemistry. After a little study, I did try heating up graphite powder in a ceramic bowl with 43% phosphoric acid and a few drops of dil. h2o2. What formed was a spongy light grey residue. Don't know if there is any graphene there but there was remarkable increase in conductivity compared to the dry graphite powder. Kindly, cast some light on what must have happened. Thanks and regards.

[@ThinkingandTinkering]

intercalation

[@ankitvjpr]

Really astonishing on table top without any messier a 4 farad grate... on the face of others who make it so delicate and something that can be manufactured in pricey labs...

[@ThinkingandTinkering]

just think of all those greats who did wonderful work without pricey labs - exploration of ideas doesn't need a great deal of money

[@ankitvjpr]

Very well said .... I belong to India from a ruler back ground ... I was fortunate that I got chance to study and become capable to earn bred ... but when I go back I created people and villages having less electronic... still they just have 4 hr in full day ... I always think of doing things that could benefit them ... so I keep on reading and understanding things that can help them .. Like super capacitors ... they can charge fast ... but the thing is that they can with hold that like battery... I constantly look beat of both worlds... they can charge fast .... with stand the charge like battery ... cheap so that all people can afford and can solve there real life problems ....

[@ThinkingandTinkering]

i always try to make things that can be produced any where in the world with a minimum of machinery - if any at all!

[@tejeshpawar8644]

One of the great informative video I have ever watched, thanks a lot sir for showing the capacitance , Apriciate you a lot

[@partisanguerrilla3167]

VERY encouraged here to experiment now! Thank you dearly for your dedication and open source attitude!

[@ThinkingandTinkering]

+PartisanGuerrilla and let me know how the experimenting goes

[@RobotUnderground]

Can you reply with the link about the 60kF cap you cobbled together?

[@rodgercampbell4660]

I love this video. When I was working with electronics in the 80's, if we needed a capacitor even close to one fared, we would use an amplifier circuit to simulate it because such a large value capacitor was a practical impossibility. Now you can slap one together as easily as any Mod Podge craft project.

[@edmclaughlin4923]

I would go back to school to take courses from you Robert. This video was great. I love learning from you!

[@ThinkingandTinkering]

cheers mate

[@pretoriarainbowtroutaquapo1675]

Hey Rob, I have started watching your videos very recently, just want to say a massive thanks you are a brilliant mind and a wonderful inspiration!

[@ThinkingandTinkering]

cheers mate and thanks for taking the time to post

[@zuricatex]

Yup... it's pretty damn impressive. Congrats man and thanks for sharing. Regards from Argentina!

[@JohnLauerGplus]

The content of the video is so amazing, but the quality of the video is so blurry it's really sad. We should all pitch in and buy you a better video camera so we can really see the details of what you're doing.

[@kotenkostiantyn1282]

And better micro (two channel at least). But all an all video is great!

[@secondsettweezer9884]

I didn't even notice lol I'm using a 13 year old thinkpad with a 1024x768 display

[@SI-GOD]

A closer view of the detail things would be excellent. I often watch from my cell phone and the KZbin app will not allow me to zoom in or at least not that I have found. I used to be able to zoom but about 8 months ago something changed and I can't anymore. Bummer!!!

[@robertjames1259]

So I true. I second that emotion

[@jamierollinson9354]

So if I am understanding this right your 4 farad capacitor, translated into size comparison to those capacitors you find in a clock radio for example, would have to be the size of the Kitchen roll you have there. (depending on the voltage used)

[@ThinkingandTinkering]

sounds about right mate

[@simonhosking7548]

fantastic - clear explanation and fun - yes experiment the components are there so why not... how exciting - really this just opens up a whole new world... thankyou

[@ThinkingandTinkering]

cheers mate

[@simonhosking7548]

nice one bought your e-books too, Graphene and supercapacitors - a good excuse to build a kiln in the backyard methinks... love messing with fire bricks and acids... Are you still making the ink for sale?

[@ThinkingandTinkering]

no mate - but i did a couple of videos on how to make it for yourself

[@simonhosking7548]

awesome yes I have watched - very inspired by your work and knew I would just have to try something from your vast pool of info... I'm loving the graphene intercalated compound film at the moment, although handy little amounts of aluminium chloride have proven hard to come by in Australia I do have a source albeit expensive - saving pennies...

[@ThinkingandTinkering]

you can make your own by dissolving kitchen foil in brick cleaner - aluminium in hydrochloric acid - google will help with directions

[@BluesDoctor]

Bravo. Well done and great work stimulating both the young and the old. Experiments do not have to be hard nor exceptionally complex, just well thought out. Hint, use the noodle...

[@ThinkingandTinkering]

+BluesDoctor cheers mate - and absolutley

[@AndreaDingbatt]

I am saving up now, so I can buy one of the kits from your shop!! And I am going to have Sooo much Fun!! I hope to be off grid within this year!! 🙂. XxX.

[@stevewatkins1221]

That is outstanding!!! I'm going to make some of these and see how they charge with my Bedini-starship coil energizer. This is really useful information, and a must try. Thanks for this amazing video

[@nancysmith9487]

Top notch tutorial, Appreciate your time and effort, sir That's pretty amazing

[@Delta7Smith]

I love all your videos, very informative and extremely easy to understand. You make a great teacher. Unfortunately I can hear what you're saying in this video and I'm excited to learn about this. Can you please add subtitles?

[@Delta7Smith]

Please disregard, it was my phone acting up

[@mouldykev]

Hi Rob i couldn't quite get the jist of the activated carbon / acetone mix, can you please tell me what the binder was. kev

[@ThinkingandTinkering]

just experiment with it mate - PVA works well but so does SBR and CMC

[@mouldykev]

Robert Murray-Smith many thanks Rob, did you check out that web site that i emailed to you yesterday ?

[@ThinkingandTinkering]

i did mate and sent a reply about it

[@thepetrarcticwar2778]

Personally, for an acidic electrolyte, I'd use gold foil, very low resistance and absurdly high conductivity, and almost nonexistent reactivity

[@kotenkostiantyn1282]

Would cost a lot

[@jamesparkes4363]

Gold leaf ;)

[@janami-dharmam]

Gold has low overpotential, the working voltage will be less than 1V in that case.

[@raywharton9425]

Thank you for this video! It is exactly what I have been hoping for in the context making carbon based energy storage. Right now I am puttering with making graphene, and I think I have a couple grams of it, but it's still a little short of being in a usable form. My research in this stuff in forced to take a back seat, right now I am putting together a farm business and that takes most of my mental focus. I hope to be able to power an electric bicycle with a much larger unit in a couple years, after my LiPoly expires. I think it would be great fun to see one of your large super caps on a bike, that would be a real ground breaking video. I am curious how great the difference in thickness of active material is between your two systems, and also I wonder what the upper limits are on how thick one can make the active material, and what limiting factors tend to come in to play as one thickens the active material.

[@ThinkingandTinkering]

+Ray Wharton shame about the delay mate - but good luck with the farm. I was thinking about a bike myself - i might buy one to do just exactly that with lol - I should measure it but it was just a how to make it demo. The limiting factors would be resistance mate - the thicker it gets the greater the distance to the collector plate and the higher the resistance. Attachment will be a factor too and electrolyte penetration

[@BluesDoctor]

+Robert Murray-Smith lol. I was sitting here pondering the transient punch through V, Q and resistance issues as I saw this post. Downloaded Grafoil engineering guide and thought, quite an engineering trade-space. Permutations offers much room for optimization and plenty of interesting lab work. Amazing what 50 years of quality lab work can yield for things like grafoil.

[@ThinkingandTinkering]

+BluesDoctor i tend to recalander the foil down to a few microns via a two roll mill - it is amazing stuff and you are quite right there is a ton of work that can be done here

[@Buzzhumma]

I have watched this 3 times now and it still excites me 👍🏻

[@Buzzhumma]

Thats 4 times now 😂

[@tjtommy5495]

18:05 Makes sense the Activated Charcoal would store more. It has a larger surface area cuz of all the porous holes in it.

[@yosmith1]

Never stop, Sir!

[@ThinkingandTinkering]

+Neil Smith cheers mate

[@meagain2222]

That shows that carbon must have huge surface area.Very good demos thank you.

[@ThinkingandTinkering]

cheers mate

[@maxbrad60]

From the title I expected something simpler but it is very informative

[@gardenlifelove9815]

I love the cackle hehe that is impreasive capacitance for such a small package.

[@Kalanchoe1]

15:21 sound of silent satisfaction

[@ThinkingandTinkering]

nothing wrong with a bit of smugness every now and then mate lol

[@jamest.5001]

thanks for sharing all your know how. I don't think the wives and mothers like it much though. I can never stop watching.

[@ThinkingandTinkering]

lol - awesome mate - cheers

[@VeniGaming]

What kind of electrolyte won't react with a metal sheet?

[@jarusRnD]

Hi Mr. Robert, I’ve been following your incredible videos on supercapacitors and truly admire your expertise. My client is exploring large-scale supercapacitor manufacturing, and your insights could be invaluable. Specifically, we’re curious about scalability (large units vs. clusters), real-world performance vs. traditional batteries, and challenges in production. Would you be open to a quick discussion? Looking forward to your response!

[@saphirastudios313]

Do you think I should make a science fair with this? I would really enjoy the input!

[@Alexandr22ru]

If the long capacitor electrodes are impregnated with an electrolyte, the capacity increase. In some cases, is impregnated under vacuum 24-48 hours. But even without vacuum markedly significant increase in capacity. Thank you for your Vidoje they sparked my interest and now I find it difficult to stay :)

[@ThinkingandTinkering]

+Karantin Kunz thanks for the comment mate - nice one

[@solarhope]

Great vid Rob, full of step by step information as well as many tantalising ideas hinted at. I really must make the effort to replicate your experiment and hopefully come up with ideas along the way. All the best - Martin.

[@ThinkingandTinkering]

+solarhope - you discover by doing mate

[@aldovanzyl-jackofalltrades8446]

Hi there! Wonderful video... So tell me, how would you build a series of Capacitors that can be connected together to have between 48v and 55v that can be used as a storage battery for solar applications? Would you use this same method? I need a a bank that is about 30kw + Any guidance?

[@EvanAxer]

How does this only have 125k views......

[@hyperhektor7733]

KZbin CEO is a SJW-Femminist SJWs dont like useful videos ;D

[@thundergod7391]

A very good learning and knowledge gaining vedio for learners

[@paulalins4464]

I would like to know which binder did you used and the percentage in relation with the activated carbon.

[@ThinkingandTinkering]

there are a whole range if you watch other videos i talk about binders but PU, PTFA, SBR, CMC, PVA are some good ones and around 5-10% by weight works well

[@robertzitting4547]

I love watching your videos, very interesting and informative, may I recommend a microphone on your coller or something closer to your mouth, your shop creates an enormous amount of echo which makes it very hard to follow what your saying. Keep up the excellent videos, thank you 😊

[@misterjimminyman]

Like the modern day Professor Laithwaite. Thanks very much.

[@ThinkingandTinkering]

lol - cheers mate

[@flomojo2u]

Hi, very interesting work, I have watched some of your other videos beforehand but this one was a little tough to follow partly because we didn't get a close up view of the entire process; as it was we had to more or less imagine what was going on several feet away, at the table. It was also a little tough to tell what was going on because you listed so many possibilities for experimentation without spending some time explaining why you chose the ingredients used in the video. I understand that we are being encouraged to try things on our own, yet as another person commented it would so helpful to have the complete process documented (Maybe in the video description?) so we have a baseline to compare and try variations on with a known-working model. It doesn't need to be the best or even fairly good, just something to start with. Keep up the great work!

[@ThinkingandTinkering]

+flomojo2u Hiya mate - i am glad you like the video - I don't really believe in hand holding too much - there has to be work, effort and failure on your side - that's how you learn

[@flomojo2u]

+Robert Murray-Smith I don't really see it as hand holding at all, this is how scientific research is done. You've made some very impressive claims about the capacity and nature of the super caps you've produced, but to allow anyone -scientific researcher or just a hobbyist- to validate your claims it's necessary to detail the exact steps taken. The more ground-breaking and revolutionary the claim, the more the need to validate it. I understand you're encouraging experimentation, however it may discourage some people to be unable to start from a known-good point where they have at least some small hope of it working. It's not always necessary to re-invent the wheel before improving it.

[@yougeo]

I want to say i liked that you explained the different possible effects of all the different possible materials. It made it more clear what was going on with he process not less as this commenter seems to think. Larfe surface area bound but not insulated by the minimum needed adhesive making contact with the conducting plates best suited for your chosen electrolyte. Simple!

[@flomojo2u]

+yougeo Well I'm glad someone found it simple ;). Part of my objection to the lists of all the potential materials/electrolytes/binders is that Robert went on to list so many without actually saying what sort of reasons you might want to use a particular electrolyte, for example. I get that you don't want to use light metals with a strong base/acid as this would dissolve the electrode/plate, that's quite clear. I just would have appreciated reasons that you *would* want to use various materials together, maybe some of the experiences he's had that would be both interesting and informative. And as I've mentioned before a simple statement at the video of what we'll be seeing today (I.e. "Today we'll be comparing XX and XX, using XX and XX Here's why...").

[@ThinkingandTinkering]

+flomojo2u This video isn't about making claims mate - it's about encouraging people to experiment - if you feel it discourages you - well - no problem - you can't make everyone happy. From the feedback I get a lot of people are encouraged to try and as far as I am concerned the objective is achieved

[@rogerjoy2722]

In India there are some sellers that scams people. I purchased sodium sulfate and tried to make a supercapacitor and it didn't work at all. I thought I was making some mistake and was hopeless. But after testing the conductivity of the electrolyte I found that it was something else. So I broke a old cell phone battery , cleaned the copper foils and made a super-capacitor with (NaCl) salt water as electrolyte and to my surprise it works quite well. If you don't have any ingredients near you, you can try this out. But it is far from perfect ......

[@Tiyagi99]

It would be interesting to know the self discharge and esr parameters.

[@grzegorzblaszczak2940]

Why voltage need to be that low? Any chance to build super capacitor that hold 100V for example?

[@ThinkingandTinkering]

because small ones are quick to experiment with - i have built big ones in other videos

[@flash001USA]

Hi I have a question about your carbon powder and binders you are covering in this video. When it comes to the acetone method, are you mixing just acetone by itself with the carbon powder or is there a third additive that is the actual binder to this formula? My apologies but I wasn't quite sure what I heard in the video. My last question is about the current collector materials in this demonstration. Did you use the same current collector materials for both capacitors? If I was not mistaken in what I heard you describe I think you used graphite foil for both capacitors. I'm aware that on one capacitor you used activated carbon and on the other capacitor you used graphene oxide if I heard you correctly. I am wanting to try my hand at this so this and you have covered this in detail and I cannot thank you enough for sharing this information with others. Take care and have a Merry Christmas, Flash001USA...

[@RAMCHARAN-dt9ew]

What is the instrument that u r using to calculate high capacitance ?

[@gateway8833]

4 Farads on that device? Ok, Officially mind blown. Not long ago I was doing a Fire Investigation and we found hundreds of Capacitors in a Arsonists storage shed. The PhD that helped us on our case said a 1 Farad Cap would be as big as a room. Either I got the dumbest Engineer or I misunderstood what he was telling me.

[@ThinkingandTinkering]

a farad used to be huge when stored on a cap mate but that started to change around 20 years ago now you can store a farad on around 12 square centimetres of active material - but you are right 4 farads on that little thing is mind blowing lol

[@aomanchutube]

LOL, been watching old videos. I have this standard ~7.5"*9.5" composition book with 100 sheets on it. I calculated ~18A per sheet pair so ~200A per book. A stack of 4-8 books could start a truck. That's between 1/8 to 1/4 of the normal battery size. And this is with just a standard "everyone knows" recipe using kitchen towels.. LOL.

[@aomanchutube]

Ofcourse it would take quite a bit of sheets to match energy storages. I'm thinking, big cheap diy solar storage. And above all, safe.

[@ihtsarl9115]

Great Lecture I liked every step I am keen to know the capacitance of the grapheme supercapacitor.

[@ihtsarl9115]

I watch all your video and they are great . Can we work on a higher voltage supercapacitor? We live in an AC world and that's where the scientific challenge is finding a dielectric that can store high energy yet can withstand ac voltage.

[@pappaflammyboi5799]

At 4 Farad and 2 mg of material, you would be looking at around 2000 F/g; much higher than your off-the-cuff calculations of 500 - 700 F/g you call out in the video. That just about beats the field far as I can tell. I did read somewhere that a nickel hydroxide electrode was producing +3000 F/g but given your environment, set-up and simple chemistry, that's downright impressive.

[@ThinkingandTinkering]

all the info is on the vid for folks to make and verify if they wish mate - there is going to be a difference on specific energy when the final device is put together

[@yougeo]

Very nice summary to tie things together. Thank you! Experimenting with various sifted carbon grain sizes with various adhesive glue viscosities looks promising. Perhaps even a compressable spongy adhesive to make a variable supercapacitor!

[@ThinkingandTinkering]

+yougeo i did a video on exactly that mate lol - let me know when you do a video of your experiments i would love to see

[@johnhamilton4816]

I remember watching an older video on capacitors and capacitance and them saying it would take a capacitor the size of a skyscraper to hold 1 farrad, that been said i think that was for oldschool capacitor design

[@brunomarier8872]

Initially congratulation for your video and your humour. Thus to obtain a super electrolytique capacitor one takes a graphite sheet one applies graphite oxide diluted in acetone above, one applies an insulator example a paper paper towel over the oxide coating graphite dried and then one pours some drop of adhesive contact above the insulator and then one gives an oxide graphite sheet impressed of graphite and that it ? Which proportion of acetone mixes you one with graphite oxide? Thank You :)

[@tefmedia7754]

What is the binder used that's dissolved in acetone? I'm not finding the video

[@zoki.to974]

8:32 activated carbon, in this case carbon for a fish tank filter

[@timothyblazer1749]

He didn't say.. But loads of plastics dissolve in acetone. Styrofoam for one, as a cheap option.. Also cellulose dissolves in acetone.. however you might want to look at the electron mobility of a binder/active material combination to better determine a binder profile.

[@paterfamiles]

Robert, do you think making the activated charcoalfrom hard wood charcoal CaCl would work OK? Thanks for the videos.

[@ThinkingandTinkering]

+Bill Henry well worth a try mate

[@TheSuperChannel]

+Robert Murray-Smith and would one still need to exfoliate that "charcoal/activated graphite" and then hydrothermally process that exfoliated "charcoal to activated carbon" to get GRAPHENE ( or the acetone/h20 combo to reduce to GRAPHENE) or am I still missing or adding a step to the gentlemen's above (charcoal to graphite to GRAPHENE ) process? Thank you and apologies for any redundancy in the query, And SUOER thanks for this share, big big ups Mr. Smith!

[@ThinkingandTinkering]

+ROMAN GABRIEL I think he just wants to make chatcoal and grind it up mate. If you wanted to graphetise the charcoal you would need to hydrothermally carbonise it with a nickel or iron catalyst then grind it up - without a doubt any processing of the carbon that increases surface area or functionality will lead to a better capacitor - but that is where the experimentation comes in

[@RaindropServicesNYC]

Very thorough explanation. Thank you. Just one small detail I would like to mention. The mike picked up a lot of noise form the foils. Something to keep in mind for future videos. Thanks...

[@midnightgardener8346]

First off I want to say thank you for these videos. So I’ve followed your channel since your video on making a solar cell from extracted leaf chlorophyll. I’ve had hopes of someday building my own generator one day for years now. Something of which I know very little about, so I’m constantly looking for answers. I’m constantly finding myself back here with a great deal of the answers I’m looking for. But the one I’m having troubles answering is whether or not these supercaps are a suitable alternative for energy storage for off grid use. I’m reading and seeing a lot of back and fourth on this. Would love to hear your thoughts on this if you wouldn’t mind.

[@ag135i]

Can I make and experiment/research something made of metal wool?

[@MrBrew4321]

I've already got a hundred projects, but this video convinced me I want to add one more: research capacitors! :D

[@ThinkingandTinkering]

go for it mate lol

[@MrBrew4321]

Robert Murray-Smith Thanks for the inspiration, I built a few simple capacitors over the past few days, just on my desk, and with random materials.. but it's loads of fun! :D

[@ThinkingandTinkering]

it is indeed mate

[@itanc1]

Nice work indeed, can you advise on making tank caps for a bench top induction furnace? Cheers

[@ryanlebeck259]

Could you do the same thing to make a capacitor that has the same dimensions as a button battery? I think that would be a real treat. That could also make them easier to link together within a system while saving space along the vertical profile or the unit.

[@abdullaqasem4861]

Thank you very much for sharing these information with us . I have several questions. Hope you don't mind! 1.If I connect several hundred of these "SuperCapacitor" in parallel can I draw lets say 100 amps without any dangerous or burn these plates ? And If the answer is yes 2. how can I calculate the duration which these Capacitors can deliver 100 amps (using this formula ---- Ah = F * V / 3600----) or something else ? 3.How much the ESR or (the peak current )? 4.my final question is If I increase the surface area size of these plates the capacitance will increase but the voltage rate will decrease right ? Thank you very much :)

[@ThinkingandTinkering]

+Abdulla Qasem no worries 1 - yes 2 - looks good 3 - don't know 4 - capacitance increases voltage remains roughly the same

[@VeniGaming]

Nice video. What would be the best electrolyte to use with aluminium sheet and how I determinate what voltage can I charge my capacitor once is ready ? Anyone ? Thank You

[@hammysmad]

I was hoping to get in touch with you over an idea that would have medical benefit.

[@multimargejta123]

So what binder you use for activated carbon one?

[@ThinkingandTinkering]

there are loads mate - read a few papers and pick one you like

[@coldfinger459sub0]

Before I was intimidated to make a simple electrolytic capacitors for my electronics 101 class now after watching your videos it looks like I’ll actually make a great super capacitor has one of my class projects thank you for bringing it down to a simple level that’s not intimidating easy to understand. As easy as making a penny and nickel lemon battery 👍