posted Aug 5, 2011, 3:06 AM by Hatef Sadeghi
Researchers from the Lawrence Berkeley National Laboratory have created a graphene and tin composite material that can be used to make battery electrodes. Tin turns into nanopillars when heated at 300 degrees - and these nanopillars 'widen the gap' between graphene layers. This leads to better performing electrodes (faster charging).
This is still an early stage technology - current prototypes only last for about 30 charge cycles.
More info: http://www.engadget.com/2011/08/03/researchers-use-graphene-and-tin-sandwich-to-make-better-battery/