Re: Battery breakthrough

Mark Williams wrote:
"Dirk Bruere at NeoPax" <dirk.bruere@xxxxxxxxx> wrote in message news:5ssmmpF1b5rrqU1@xxxxxxxxxxxxxxxxxxxxx
crazyh0rse1@xxxxxxxxxxx wrote:
On 19 Dec, 08:44, Paul Hyett <p...@xxxxxxxxxxxxxxx> wrote:
In uk.politics.misc on Tue, 18 Dec 2007, Dirk Bruere at NeoPax
<dirk.bru...@xxxxxxxxx> wrote :



http://www.physorg.com/news117212815.html
" The new version, developed through research led by Yi Cui, assistant
professor of materials science and engineering, produces 10 times the
amount of electricity of existing lithium-ion, known as Li-ion,
batteries. A laptop that now runs on battery for two hours could
operate for 20 hours, a boon to ocean-hopping business travelers.
"It's not a small improvement," Cui said. "It's a revolutionary
development."
The breakthrough is described in a paper, "High-performance lithium
battery anodes using silicon nanowires," published online Dec. 16 in
Nature Nanotechnology, written by Cui, his graduate chemistry student
Candace Chan and five others.
The greatly expanded storage capacity could make Li-ion batteries
attractive to electric car manufacturers. Cui suggested that they could
also be used in homes or offices to store electricity generated by
rooftop solar panels.
"Given the mature infrastructure behind silicon, this new technology
can be pushed to real life quickly," Cui said. "
If this pans out, the guy is gonna become pretty rich!
--
Paul Hyett, Cheltenham
Sounds good to me. I'll have an electric car as soon as the range for
a single journey can be improved. And if it has solar panels on the
roof to help charge the battery when parked during the day then even
better.
You better beef up your domestic supply then.
You would need around a minimum of 1kWhr per mile. So if you wanted a full overnight recharge on a car that could drive for 300 miles between charges your electrics would have to deliver around 30kW ie 240V at about 125 Amps.

Or get a lighter car, the Wrightspeed X1 delivers over 100 mile range on a 25kWh charge.

http://www.wrightspeed.com/specs.html

The solution is to have interchangeable battery packs that can be charged off the mains all day (or a domestic source), or a biodiesel hybrid for longer journeys.


Battery packs, even super-efficient yet to be invented ones, are going to weigh well over 100kg. Changing them would not be a trivial task.

--
Dirk

http://www.transcendence.me.uk/ - Transcendence UK
Remote Viewing classes in London
.

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