ElectricMotorcycleForum.com
General Category => General Discussion => Topic started by: Richard230 on February 22, 2013, 04:22:33 AM
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Here is the latest superconductor concept: http://boingboing.net/2013/02/21/graphene-supercapacitors-could.html (http://boingboing.net/2013/02/21/graphene-supercapacitors-could.html)
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Imagine being able to charge your spent laptop or phone battery in 30 seconds, and your electric car in a few minutes.
Okay, I'm imagining it.. hang on a second here.. okay.
2025 TESLA GRAPHMOBILE pulls up to a 100 kW Supercharger. Driver hops out, pops in the slender supercharger connector, taps his watch. 3 minutes later, the green 100% light flashes and the driver hops back in and tears off into the distance.
10 miles later, the driver coasts to a stop at the next Supercharger. Driver hops out again, recharges.
Now.. if you had a 1MW link? 100 miles in 3 minutes? That'd be amazing. At 480V you'd need 2000A.
0000 or 4/0 cable is rated at 260A with 90C insulation.
Here's a single 4/0 cable with insulated sheathing.
(http://www.andybaird.com/travels/skylarking/2008/photos/4-0-cable.jpg)
You'd need 8 of these to transfer 2000A.
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Also, unlike batteries, Graphene supercapacitors are non-toxic.
Tesla may beg to differ.
http://www.teslamotors.com/blog/mythbusters-part-3-recycling-our-non-toxic-battery-packs (http://www.teslamotors.com/blog/mythbusters-part-3-recycling-our-non-toxic-battery-packs)
Zero was very proud of the non-toxic nature of the molicel cells they used prior to 2012. I haven't seen them talk about that recently.
Q: Aren't the batteries used in electric vehicles highly toxic?
A: Zero is the only company with a non-toxic battery. It's landfill-safe; you could eat it if you wanted to! It is possible to make these high-output batteries and still have them be completely benign, but we had to design our own to get one.
Read more: http://www.motorcyclistonline.com/newsandupdates/122_0910_zero_motorcycles_founder/#ixzz2LaACyjV6 (http://www.motorcyclistonline.com/newsandupdates/122_0910_zero_motorcycles_founder/#ixzz2LaACyjV6)
Don't get me wrong. Supercapacitors are amazing, and graphene is an amazing material. But without having read the Science paper, "battery-like density" doesn't really tell me a whole lot. I hope they keep pushing it, and I hope we see the technology move from the lab to the store soon. Then we'll have some energy and power density numbers to speculate with.
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You'd need 8 of these to transfer 2000A.
Well no, you just step up the voltage and then step it back down in the car.
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You can make graphene with a lightscribe DVD burner at home... feel free to test and play with it ;)
http://hackaday.com/2012/12/21/making-graphene-with-a-dvd-burner/ (http://hackaday.com/2012/12/21/making-graphene-with-a-dvd-burner/)
The Super Supercapacitor | Brian Golden Davis on Vimeo (http://vimeo.com/51873011)
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Supercapacitors most likely will be added to electric vehicles to assist the battery during faster charging or discharging times. However, there have been so many undelivered promises for incredible capacitor density that I don't much care about breakthroughs any more. I just want to see a production supercapacitor. Then I'll be impressed!
I've been following EEStor for about 5 years now. Still waiting...
http://theeestory.ning.com/profiles/blogs/eestor-cat-officially-out-of-bag (http://theeestory.ning.com/profiles/blogs/eestor-cat-officially-out-of-bag)