Originally posted by Chippa
Whoa! Not so fast everyone. Graphene is Carbon. Carbon capacitors where the first super-capacitors out of the Box.
Back in the early 80's I was charging up 1 Farad Capacitors, and running LED's for around 15 minutes or maybe it was 20 minutes. So the dude
lighting his LED in the OP post for what was it 10minutes?? - is far short of the little beggar I held in my hands, back in the 80's. And it was much
The problem with this disk, ( my guess), is that this crazy DVD coated with the graphene probably only produces a 1.2 volt cell. This is the key!!!
You will have to put a lot of these layers together to get anything higher than a 1.2 volt capacity, when you do this you reduce the overall
capacitance, then suddenly you have a really big stack of graphene coated DVD's to get any usable charge out of it.
Supercaps have been around since the 80's, but the problem is always the darn 1.2 volt cell. Even regular batteries run into this basic cell voltage
I am skeptical!!!
The benefits here are that this process can be done by anyone.
It's cheap, easy and fast.
The other benefits are that Graphene is 2D..meaning you could turn your entire house into a supercap if you wanted to by printing layers onto
wallpaper and paparing your home with it.
You wouldn't need to have 'battery sized' energy storage devices any longer, now you can have house or office block sized devices instead.
Stacking 2000 A4 paper sheets turned into energy dense, 1.2V cells or supercaps is a LOT of storage, in the size of a typical car battery.
It also has better conductivity and lower resistivity at room temps than Silver, it is being considered as the perfect material with which to build
quantum computers from too.
Optically it has many uses too.
It is also a self repairing material, using ordinary hydrocarbons, the molecules will bond with and fill any damaged areas on the 2D Graphene sheet.
This is exciting stuff.