2191 Self Charging Solar Battery

[@johnblaze3546]

I just found this gentlemen, this channel rocks, blowing my mind. Love it. keep up the great work.

[@peterlang777]

Hey! I have been working on Prussian blue 💙 for my hygroelectricity machines 🎉

[@redsnare]

Always thoroughly interesting vids Robert, thank you for sharing your knowledge.

[@paulscott6463]

Your energy sharing discoveries never fail to make me smile, great work, thanks for sharing

[@philipvecchio3292]

This is really cool! I've been using these chemicals for Cyanotype photography. It's kind of interesting that there's a potential for a form of photolithography.

[@bigmouthstrikesagain4056]

It makes me wonder whether there's other chemicals used in photography that are even better than the prussian blue solar cell....I think we should start researching, all of us.

[@reypolice5231]

Thank you again Robert for showing me something i would never have known about.

[@Luziferne]

What about a gel version of that? if you can stack the gel(with the electrolyte) in thin layers and put the electrodes on the front/back, light could shine in from the sides. If you use a glass box to stack the layers

[@astikennel]

I love your videos Robert, your enthusiasm just leaps out of the video!

[@joohop]

Beautiful Kind Sir Bless Up

[@hunnybunnysheavymetalmusic6542]

Have you ever explored organic fruit dye solar cells? I've read, about 20 years ago that they were using berry juice and paper to make solar cells. I have not looked into this recently, but, since I am now raising black berries and raspberries, it is something I just might begin looking into.

[@simongross3122]

My kids made these at school. Very interesting.

[@hunnybunnysheavymetalmusic6542]

@@simongross3122 Would be excellent if more people sought to make non-toxic, long lived ways to produce power so we don't get buried in mountains of deadly poisonous toxic waste. After all... Just exactly how "GREEN" is all that TOXIC WASTE they never talk to us about? [I say that as a 35 year long renewable energy researcher, and general chemist, raising organically grown food] I PERSONALLY don't want all that poison in MY water... Making solar power from EDIBLE FOOD would SEEM like a MUCH BETTER way to go... Assuming those who push all the garbage on us ACTUALLY MEANT what they are SCREAMING at us, don't you imagine???

[@seannolan1833]

I missed the point of the filter paper. But if you increased the thickness would that hold more energy or is it purly a surface area thing?

[@MichaelRada-INDUSTRY50]

Thank you Robert, have a great week

[@SUPERMAR10312]

Why are the reference photos he uses always so blurry?? It seems to be in most videos too

[@mohebalikalani2115]

Hello, thank you for your explanation when several countries in the world seasonal air temperature and water is above 35 degrees we can use this condition to produce electricity and other products that I mention my profile.

[@dremaboy777]

Spectacular 👍🏾👍🏾👍🏾. I'm thinking of covering a shed sized roof with A4 size sheets of this; And monitoring the effects of day and night cycle into a storage device on a 10% load. Then design an energy harvesting device that discharges at night; from the day's charge. This is wild.

[@bigmouthstrikesagain4056]

I personally think the this combined with those graphene plates he built as a sort of solar static capture would work well.... or the diy solar cells he made from lcd tv screens.. the key here is to use multiple different technologies together to fill in each others weaknesses and amplify each others strength....individual cells can't do much but together they can do what seems like Almost anything.

[@dremaboy777]

@@bigmouthstrikesagain4056 Noted, and agreed. Thanks for the comment. 👍🏾

[@coulterjb22]

Awesome! Hello EV car paint!

[@imbabyface]

Brilliant Sir!

[@travismoore7849]

So you would what use that with indium tin oxide from a display to have a solar array to have the series and parallel cells for the current and voltage you want? Or could you get more power out using graphene or graphite paper or carbon felt that is conductive?

[@zylascope]

Very interesting. Awesome! Thanks Robert. 💖

[@SpaceDeviant]

Great stuff Rob! Really appreciate the links.

[@Berkana]

Robert, I'm a bit confused: Is the battery in its fully charged state when it is blue, or when it is white? In your description at 1:54, you said the sunlight turns a blueprint's pigment white, and as it discharges as a battery, it turns blue again. But in your demo, the strip of paper started out blue, and gave a voltage. And when it was discharged, it became white. Could you clarify which color has the high potential and which color has the low potential? Does it discharge in the other direction in an opposite polarity?

[@VeniceInventors]

The sound gets cut off after "leave it" before the words "exposed to air" or "in the sun" could be heard, but I understood it as "leaving it exposed to air" which causes oxidation. That would be consistent with the demo. So dark blue is fully charged and as it gets oxidized it releases electrons and turns white, while in the sun it absorbs electrons and releases (repels) the oxygen.

[@cguss5682]

The deep blue (PB) has the potential.

[@acgzr9534]

​@@VeniceInventors Actually I believe solar energy isn't actually contributing during the recharge stage... Page 5 of the 2014 paper shows chemical equation 6, in which O2 is what causes it to become blue again (recharge). It says it right there: "The bleached device recovers its colour after oxidation by oxygen in air [...]". So I don't believe this device uses solar energy at all...? There's no mention of solar energy helping during recharge in the 2023 paper either I guess it *can* work under the sun (despite suffering degradation because of it), and having it working during night is great! But if I'm right it means the video shouldn't have been about solar energy at all

[@RyanJBarnard]

Fascinating! Thanks for sharing.

[@drillerdev4624]

I'm curious about its mechanical properties. I'm assuming that in order to charge with solar energy it's surface will have to be maximized in relation to it's volume, but sheets are not the optimal form for batteries at first thought. Then again, I'm curious about whether the surface can be rolled or folded, and if it would still allow to serve the energy in that shape. Then it could have some particular uses.

[@Xanderbelle]

Isnt this essentially a redox battery like the flow batteries or your bromide battery

[@12thsonofisrael]

Good Job Sir Robert 👏 👍

[@Vibe77Guy]

A company called LitroEnergy attempted something like this some 20-30 years ago.

[@wolvenar]

I believe I remember that, but didn't remember details. Thanks for bringing it up so we can all investigate.

[@Vibe77Guy]

@wolvenar I remember it because when I saw the article in Nasa Tech Breifs, about the tritium glow paint, I sent them an email suggesting that they put it on solar panels. I can't know that that's where they got the idea, but it wasn't long before they did it.

[@funkaddictions]

@@Vibe77Guy NurdRage did a tritium vial + solar panel battery. The concept is pretty cool.

[@Clintimtired]

the start of your video made me think of an article I once read in popular science there was a car that was electric I don't know if they use batteries whether or not I don't really remember but what they did was they had solar panels in a compact space and they used one a mantle like the propane Coleman lanterns for camping yeah it was a bigger mantle than what Coleman uses they put the mantle in the middle of the solar cells they were arranged like a three-dimensional dungeons & dragons dice and they said it took less gas to just make light to run it or charge batteries then it did for the combustion engine it was quite a large article but I never seen anything like that since then

[@Dragonx7100]

I remember using raspberry juice in the same way several years ago with good results😊

[@stevetobias4890]

Was going to say "I think your display has crapped itself". Lmao 🤣

[@danejones-qy6jy]

Fascinating...

[@stevenfaber3896]

Would aluminum mesh work better for the anode?

[@JehuMcSpooran]

Handy, I've been looking into batteries that use Prussian Blue. Finding a good source of the Ferri and Ferric cyanide that doesn't require going through an expensive chemical supply company is the tricky bit.

[@CF23583]

Great vid! Do you know the solar range in which the PB>PW reaction happens?

[@danblankenship5744]

Thanks, that was a very interesting video. I assume that the two examples are different. At 2:15, you showed that the white blueprint had energy stored, and as it discharged, the paper turned blue again. In your DIY example, the colors were opposite. Blue was the energy-dense state.

[@rl3898]

That is what I saw too

[@ElizabethGreene]

A nifty trick would be to put the ferro cyanate compound in a liquid carrier. It can be pumped through solar collectors when discharged and through electrodes when you need the power out of it. I will play with this.

[@petevenuti7355]

Flow battery 👍

[@kadmow]

microfluidics direct solar capture ???

[@David_Mash]

33.7 % limit is only for photovoltaic or also for solar thermal (water) panels?

[@justinw1765]

I think only for photovoltaic. Converting Solar energy into heat to do work is definitely far more efficient than 33.7%. Especially if you combined things like vacuum insulation with the new'ish ultra black materials. The conversion of steam into electrical energy via a steam turbine, will drop that efficiency down--but the worst steam turbine systems are at 40% efficiency while the best approach 90% efficiency. And the nice thing about Solar thermal is that if you need it for heat/hot water (and don't need to convert all of it into electricity), then it is extremely efficient. So many of the people in the US who have Solar PV panel systems, really didn't do the math when it came to home and hot water heating. Because a couple of direct Solar heating water tanks would have largely taken care of both of those needs, with very electricity drain vs converting it all into electricity and then reconverting it back into hot air and hot water. But when you go to poorer countries, especially those with plenty of sun, you see lots of Solar water heaters.

[@VinoVeritas_]

It's the theoretical limit for Silicon PV cells.

[@kistuszek]

@@justinw1765 Steam turbines are way less efficient. That 90 % is perhaps compared to the theoretical max, wihch is Carnot efficiency so overall maybe 50% heat to mechanical, if that. So theoretically slightly more efficient than PV but not enough to worth the complexity.

[@kimtech234]

Standard Thermal Solar is about 60% eficiancy

[@malcolmwilkins2495]

I think somebody has had the same idea,all the no4 coffee filters are out of stock in Herne Bays morrrisons. I had to resort to amazon.

[@peterxyz3541]

One phrase: PAINT MY MOTHERLOVING HOUSE!!!!!!! Blue roof, blue walls. Maybe enough to drive a few accent kings 😂😂😂😂❤️❤️👍🏼

[@maxkennedy5073]

I've been working on figuring out a home built durable battery pack to take advantage of Time of use rates. Commercial batteries are just too expensive. If you've built an experimental cell how would you determine the maximum safe amps to pull from a given cell. I understand C-rate but how would that be determined in a DIY environment?

[@VeniceInventors]

Great find!

[@petevenuti7355]

How do you electrolytic convert cyanate to cyanide ? It would be helpful for making these kind of compounds and similar

[@RubinJassal]

Robert, how can I contact u pls ?

[@shortbuslife3440]

Could you do something on battery separators? I have done a search and apparently you can use various plastics as the separators but they need to pass ions but not electrons and I have also seen you using paper as a separator so does it needs to be porous or not?

[@David_Mash]

I thought you were going to make a fluid battery? This could be a flow battery in low cost storage tanks

[@Okamika44]

Can this discharge while being in the sun? essentially discharging and charging at the same time for 24 hour power?

[@kadmow]

- you mean: "as a power pass through during the day"... ???

[@Okamika44]

yes!@@kadmow

[@hunnybunnysheavymetalmusic6542]

LEDs, are, as a point aside, also solar collectors. In other words, to some extent, they can both emit AND COLLECT solar energy. I have never seen how effect some of these more modern LEDs are, but, from what I read in the past, unless the more modern ones are very fundamentally different from the older ones, they SHOULD actually be MUCH MORE efficient, and also, they are less prone to decay and decomposition, as compared to traditional silicon based solar cells.

[@kimtech234]

..but they can't store the energy ; )

[@hunnybunnysheavymetalmusic6542]

@@kimtech234 I know that. But that wasn't my point.

[@kennedy67951]

What a fine video Robert. Alright, question Robert. If one were to mount on a sheet of thin glass and some fiber optics attached to edge of glass sheet Which then would allow 🌞 light to shin up into glass sheets. Would this recharge battery cell? Thank you sir for sharing your experience and knowledge with me. 10 of 10.😊😊😊😊😊😊😊😊😊😊

[@SimEon-jt3sr]

Yeah there's a video about it. It's called a dye sensitized solar cell. The problem is it only works for so long until the sun breaks down the pigments. This is an area of active research known as organic photovoltaics and in general organic based semiconductors. It is likely to be used in the future once the right complexes can be made that remain stable etc.

[@kennedy67951]

@@SimEon-jt3sr thank you for the answer to part of my question.

[@cguss5682]

It's not just a partial answer... Even this study showed a significant loss after the first 'recharge'. RMS gave a beautiful and simple mix vs the layers upon glass with electrolyte in the paper. But, given no other choices in this particular venue, it doesn't really matter! A partial side 'recharge' through internal reflectivity is not likely to meet your requirements.

[@cguss5682]

Another option is to verify the time required to fully recharge the system... Even RMS mentioned this took 'a long time' lol! I plan to check one v two v three days to 'recharge' the cells for actual nighttime 'drip' charging of my batteries.

[@cguss5682]

It may not be the most energy dense, but not having to worry about my kids burning alive in a lithium oopsy... More than worth my UL verified and certified time 😂

[@seannolan1833]

So I was wondering can activated carbon be added to the eletrolite to aid in discharge? I ask because if it can that might enable some to discharge while outers are changing assuming you strung a few together in serous. I am dyslexic so sorry about the spelling best guess

[@peterlang777]

If you use rectennas (nantennas) you can get 80 to 90 percent efficiency. Much better than photovoltaic

[@kadmow]

- Has anyone commercialised this ?? I recall reading a paper or article on this way back - a decade ago or more, sounded fantastic .

[@cguss5682]

So, been watching you for a bit... And, my 2 year old loves you, as do I...! My question tho is that the published research mentions bubbling O2 thru the KCl as well, (it's been many moons since I've had to figure out chem reactions)... Is it only the solar/photons/ions causing the regeneration of the PB or do you think the Fe II to III (or reverse) would make a statistically sig dif? Sorry if this is silly, should've known sorta thing.... I'd truly like to use this with PV and 'night sky cooling'... (I'm in AZ, US, so tho I love wind as a concept, we don't get much). Take care and be be well!

[@cguss5682]

... make a difference with the aerated O2... thru an electrolyte... given my solar insolation vs the UK... Thus, make a simple strip as you showed vs multiple glass sheets with an electrolyte...

[@AdamBechtol]

Neat stuff.

[@PaulOvery001]

The shame, dips on more blue ;)

[@dronefootage2778]

you need a new voltage meter, one that doesn't just have a blank screen

[@bobsacamano9581]

How many watts are stored per meter squared?

[@kimtech234]

Yeah, that would be interesting to know! Does anyone have the Wh/m2?

[@willwade1101]

Shame on you for leaving the backlight on. How dare you implement Murphy's first law, you know the one where "If something can go wrong, it will".

[@infernalsorcery7923]

Pretty shallow logic if Im honest. Also, I prefer Wolff's Law 😂

[@chaorrottai]

Not bad, I mixed prussian blue powder with graphite and painted it on one side of paper, then used salt water on a mystery metal plate salvaged from a power supply and pressed the unpainted side on the salt water. With about 10 cm^2 of contact area I got 900 uA @ 0.35 V. Then I wondered if putting salt water on top of the paper would be beneficial...... it's not, it ruined it.

[@cguss5682]

So, saline ruined/destroyed the PB matrix?

[@kimtech234]

So you got 315µW per 1/100m2 that is 0.0315W/m2... How log did it take to charge / discharge?

[@dinosaur0073]

Great...!!!!

[@bigmouthstrikesagain4056]

@robert murray smith.... I wonder what would happennif you Maulden these using your lcd panels you scavenged and then stacked the prussian blue papers with the electrolyte papers. Wht would happen if you stacked these on top of each other?

[@matteoricci9129]

Make a better video of this one cos is good

[@cjdelphi]

Blue, it discharges and goes white

[@beebop9808]

Sure doc, you show me this a week after I order 45kwh in LFP cells.... 😂

[@cjdelphi]

Why you dipping paper in urine? 😂

[@wktodd]

Your shirt needs a good wash Robert,😅

[@justtinkering6713]

😮

[@William_Hada]

Yes, that's what happens when you actually do hard work, your clothes get dirty. New concept for you?

[@wktodd]

@@William_Hada sense of humour, new concept for you?

[@kadmow]

@@wktodd - ha ha ha, Robert Laughs as he puts in washer - every single day (ps. I have no Idea, my shed shirts never need a wash - dirt builds memories.).... Very clean, the colour of industrious... just for more laughs.... Evil Genius...

[@792slayer]

Isn't that interesting.