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Better batteries are on their way | Batteries now included | ...

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Saved by 7 people (0 private), first by anonymouse user on 2009-03-14


Public Sticky notes

jigsaw

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nifty

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open-top sports job

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Plugged in overnight

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refuelled

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lithium-ion

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cramp

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Cannes

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take the waiting out of wanting

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Broadly speaking, there are two ways of storing electrical energy in a chemical system. One is a standard battery, in which the whole material of the electrodes acts as a storage medium. That allows lots of energy to be squirrelled away, but makes it relatively hard to get at—and so it can be released or put back in only slowly. The other way is called a supercapacitor. This stores energy only at the surface of the electrode. It is quick to charge and discharge, but cannot hold much energy. The great prize in the battery world has thus been a material that can both store a lot and discharge rapidly, and it is this that Dr Ceder and Mr Kang think they have come up with.

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electrodes

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squirrelled

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supercapacitor

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Lithium

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phosphate

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graphite

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electrolyte

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penetrated

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egress

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one of which is good at storing ions while the other is good at conducting them

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metre acros

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in question

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In the future, therefore, that weekend in the south of France need not be interrupted by running out of juice

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