Volume 94 Issue 15 | p. 7 | News of The Week
Issue Date: April 11, 2016

Ceramic-graphene composite shows promise as battery electrode

Material combines silicon oxycarbide’s large capacity for storing lithium and graphene’s high electrical conductivity
Department: Science & Technology
News Channels: Materials SCENE
Keywords: energy storage, graphene, batteries, composite materials

Replacing the graphite anode commonly used in lithium-ion batteries with ones made of silicon or graphene, which have high lithium uptake capacities, could substantially boost the batteries’ charge capacity, in principle. In practice, however, silicon electrodes swell and shrink with each charging cycle, causing them to crack and fail quickly. Graphene electrodes also quickly lose their capacity to store and release lithium ions.

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