Thursday, March 12, 2009

Lithium ion battery from MIT

DailyMail: The [MIT] researchers took a conventional electrode made from lithium iron phosphate and altered its surface structure so that ions were released and absorbed 100 times more quickly than normal.

A prototype made using the new technique could be fully charged or discharged in just 10 to 20 seconds. A similar sized ordinary battery takes six minutes to charge.

Unlike other battery materials, the new material does not degrade when repeatedly charged and recharged. That could lead to faster batteries lasting between two or three years, they said.


Dr Gerbrand Cedar, who devised the new battery, said: 'Electric car batteries have a lot of energy so you can drive at 55mph for a long time, but the power is low. You can't accelerate quickly.'

Dr Cedar and colleagues have now found a way of speeding up this process, the science journal Nature reports.


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