Graphene-based 3D sponge-like material is useful for supercapacitors
Scientists from the University of Alberta and the National Research Council of Canada developed a new material, a 3D sponge-like graphene that can be used to make supercapacitor electrodes. The big advantage o f this new material is a high energy density at ultra high power densities – 7.1 Wh/kg at 48,000 W/kg. This could lead towards supercapacitors that can compete with Li-Ion batteries.
The new material was synthesized the sponge-like graphene out of multiwalled carbon nanotubes and cobalt phthalocyanine (PC) molecules that attach to nucleation sites in the nanotube “skeleton.” Heating the material in a microwave for 20 minutes yielded graphite – which was then quenched with ice water to transform it into graphene flakes.
2012-10-14 08:20:19
Source: http://www.graphene-info.com/graphene-based-3d-sponge-material-useful-supercapacitors
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