New Scientist
April 1, 2011
The humble hairbrush could hold the answer to building fast-charging electric car batteries.
Existing batteries used to power electric cars take up to eight hours to charge, compared to the few minutes it takes to fill a tank with petrol. While fast-charging units that can fill up a car in around 30 minutes are available, Amy Prieto and colleagues at Colorado State University in Fort Collins have now built a prototype battery with hairbrush-like electrodes that can be charged in just a few minutes.
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