Posted on 10/24/2013 1:12:03 PM PDT by Red Badger
Silicon chip with porous surface next to the special furnace where it was coated with graphene to create a supercapacitor electrode. Credit: Joe Howell / Vanderbilt
Graph displays the power density (watts per kilogram) and energy density (watt-hours per kilogram) of capacitors made from porous silicon (P-Si), graphene-coated porous silicon and carbon-based commercial capacitors. (Cary Pint / Vanderbilt)
Tech Ping!..............
astonishing and a game changer to come!
Thank you!
I wonder what it could do if you attached it to a DeLorean.
You would be stuck in the 80’s.........
material scientists? Whats that? A scientist that studies
material?
That’s what they do. Somebody has to do it!..........
Materials science, also commonly known as materials engineering, is an interdisciplinary field applying the properties of matter to various areas of science and engineering.
It was a new one to me. Material Engineer is what I used
to work with. I guess it went the way of garbage man now
called a Sanitation Engineer.
That will make your flashlight recoil.
“improved energy densities by over two orders of magnitude compared to those made from uncoated porous silicon and significantly better than commercial supercapacitors.”
Cool! Big jump!
“astonishing and a game changer to come!”
Some day they are going to figure out cold fusion or
controlled fusion, if they haven’t already. When they do
they will need total control of the population. It may
be so simple that anyone can make a reactor in their
garage. We may be so close now that the government may be
in a panic. That would explain all the NSA and government
intrusion into everyone’s everyday life.
Imagine recharging your cell phone, tablet or laptop in just a few minutes or even seconds!............
....and for a loooong time!..........Peg Bundy will be thrilled!................
This is a continuation of the work pioneered by Rice and UCLA (the latter who discovered how to cheaply produce graphene) and shows great promise. The biggest problem I see is the safety factor of using high storage capacitors. The ability of capacitors to charge quickly also allows them to discharge quickly so a shorted capacitor basically explodes.
The graph shows a power density of around 4 W-h/kg. Lithium-ion batteries are 100–265 W·h/kg.
“Imagine recharging your cell phone, tablet or laptop in just a few minutes or even seconds!..”
And,,,, those will be very minor uses, compared to what will be possible when the tech is more fully developed!
Since the capacitor is basically integrated all on a ‘chip’ the mechanical problems of capacitor shorting is minimized. Shorts could be handled by integration of fuses on the chip so that if a sudden failure occurs the fuse would blow and limit any over-current situations. The thinness of the capacitor would make them ideal for use in cell phones, tablets, palm-tops and laptops, where the current level of technology has a small power requirement, and is getting smaller everyday..........
What is the comparison between the best super-capacitors and this?
I think that is in the graph.......
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.