Rice University's laser-induced graphene makes simple, powerful energy storage possible

Rice University researchers who pioneered the development of laser-induced graphene have configured their discovery into flexible, solid-state microsupercapacitors that rival the best available for energy storage and delivery.
The devices developed in the lab of Rice chemist James Tour are geared toward electronics and apparel. They are the subject of a new paper in the journal Advanced Materials.
Microsupercapacitors are not batteries, but inch closer to them as the technology improves. Traditional capacitors store energy and release it quickly (as in a camera flash), unlike common lithium-ion batteries that take a long time to charge and release their energy as needed.
rice.pr-optout.com/Tracking.as...

[@stevetobias4890]

Very cool indeed, this is an amazing revolution in multiple fields. Great work, I would love to be able to play with one of those flexible capacitors. Are they commercially available for sale yet? Also how big can you make them, you only made small ones, would like to see a full sheet turned into a capacitor.

[@JonathanFosdickNano]

The boron-doped laser-induced graphene work is interesting, have you used both nitrogen and boron doping in the polyimide or electrochemically adding the dopant(s) after the graphene is formed? I suppose both could work.

[@SOSSTSE]

Thank You James Tour. 😊 SOSSTSE.

[@paganihuayra1899]

This is some great stuff but I was hoping it was going to be some atom thick sheets.

[@pici24]

same here ! :(

[@stancooper5436]

The electrochemical coating he mentions- does this do away with an electrolyte, and if so why are they 'pseudo-capacitors' and not just capacitors?

[@Jamex07]

What kind of laser do you use? What about the electrodes? What materials are they made out of? And what about the substrate that you're using to induce LIG? Is it polyimide or kapton tape? Would it be possible to build an electromagnet using only laser induced graphene?

[@TheCreativeautomaton]

i believe it is a C02 laser engraver and from may searching on other LiG papers that reference the rice uni work it seems they used a 3.7w laser engraver on kapton tape.

[@NThTwS]

Could that be a future for vehicles?

[@malikmuhammadhammadzia2218]

What laser are you using?

[@user-gd2qx3jc7g]

Скажите пожалуйста температуру спышки каким пирометром замеряет ?

[@leonesperanza3672]

So how much energy we can store exactly. They didn't give any legit numbers.

[@adamlong54]

So question can you do this on plastics and make the whole sheet solid graphene and layer the sheets of plastic to create a bullet proof plate thus making super light weight body armour for law enforcement and military ?

[@mattbrody3565]

Unfortunately, no. For graphene armor, you need large continuous tiles of graphene, a way to anchor them securely, and significantly many layers. These graphene flakes on plastic look like they're too small and chaotically adjoined to provide much ballistic protection. With small flakes, the practical strength limit isn't the material itself, it's the strength of the bond it forms with its surroundings and the size compared to the projectile.

[@adamlong54]

@@mattbrody3565 I've already figured it out you take the Kevlar laser cut it to size you run a laser at low low low frequency over the Kevlar it creates graphene then you take flash graphene mix it with the resins and hardeners at 3% strengthening the resins layer after layer of the resins and the Kevlar front and back being lasered creating the graphing on the Kevlar fabric will make a badass bulletproof vest. Iq 140 sir lol

[@Youtechnologic.]

i really cant understand one thing, graphene is one atom layer thin, and transparent. How come it shows black in the plastic film. I it is several layers thick isnt that graphyte?

[@imranshitta-bey874]

Think about graphite. When I have a powder of it it's black. Basically, there are small flakes of carbon sheets bundled up together. Graphene is just those stacks but reduced to a very few or even a single flake. As of today, there is no way to make a large, perfect, 1 atom thick sheet of Graphene. All we have are flakes.

[@Youtechnologic.]

But can we call it graphene? And those stacks of flaks work line graphene? Ir graphite? Because if they are flakes then they should have not the same behaviour. I think.

[@imranshitta-bey874]

Today's graphene had somewhat of the properties true graphene has. Still, it is better than using graphite in electronics. If you want to see it in action, take a look at Robert Murray-Smith's KZbin channel.

[@Jamex07]

@ Pedro Lopes It doesn't, but the flakes are small enough and close enough that electrons can still use quantum tunneling to travel from flake to flake. This method probably wont be used to make a porous membrane that can separate salt from water, or have many piezoelectric applications, but its still electrically conductive. And considering its made entirely out of organic materials, not only is that impressive on its own, but it could be incredibly cheap to scale up and mass produce, as well as being renewable, sustainable, and environmentally friendly. Imagine computers that you can compost. And as far as we know, this could be the first step toward mass producing true graphene. I read an article recently that claimed that a laser induced phase change in porous graphene while still in a liquid state could allow the graphene flakes to assemble into sheets. Best of all this could be done at under 300 degrees Celsius, while still on a polymer substrate. Its a theory at this point, but based on my limited understanding, it sounds pretty solid to me.

[@benparkinson8314]

truly amazing!

[@slevinshafel9395]

who you store energy in that printed plastic? Dont quimical reaction need like on LI-Ion baterry? can be recharged? More details please.

[@imranshitta-bey874]

There is no chemical reaction needed. Capacitors store pure electricity. You can look it up for more info.

[@slevinshafel9395]

ahh its capacitors...i like store pure electricity but the capacitors have low density of storage and cant be used like recipient of storage.

[@JorgeGamaliel]

very interesting!

[@hendrikcoetzer7234]

any thing yet

[@xirtus3397]

which laser is this ?

[@user-fk3hc8go4m]

xirt us CO2

[@pkillor]

universal laser XLS10MWH laser system with Multiwave Hybrid technology.

[@superhotbm]

check out the EESD on youtube.

[@TheCreativeautomaton]

i still think this kapton tape and 3.7w laser engraver technique is much faster and easier once setup than his eesd but i do love me robert for putting up alot of his work for us online.

[@katlehokomeke]

Hooters owl or Rice University owl?

[@XthenewyorkerX]

Grafite, always grafite, not graphene

[@bartoszbarejko1585]

Good for you, this technology is 5-10 steps behind me, You will see me doing much more advanced energy storage and converting, You must be more kinetic not still static or you always will stay in the same battery systems.

[@zachariahstovall1744]

Bartosz Barejko prove it