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[资源] 最新一期science杂志上关于石墨烯用作超级电容器的文章

Carbon-Based Supercapacitors Produced by Activation of Graphene

Science 24 June 2011:
Vol. 332 no. 6037 pp. 1537-1541
DOI: 10.1126/science.1200770

Supercapacitors, also called ultracapacitors or electrochemical capacitors, store electrical charge on high-surface-area conducting materials. Their widespread use is limited by their low energy storage density and relatively high effective series resistance. Using chemical activation of exfoliated graphite oxide, we synthesized a porous carbon with a Brunauer-Emmett-Teller surface area of up to 3100 square meters per gram, a high electrical conductivity, and a low oxygen and hydrogen content. This sp2-bonded carbon has a continuous three-dimensional network of highly curved, atom-thick walls that form primarily 0.6- to 5-nanometer-width pores. Two-electrode supercapacitor cells constructed with this carbon yielded high values of gravimetric capacitance and energy density with organic and ionic liquid electrolytes. The processes used to make this carbon are readily scalable to industrial levels.
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锂电资源共享 Nano&Micro 石墨烯与碳纳米管 超级电容器及各种科研精华
纳米化学/电化学综述 石墨烯及其相关的主题 石墨烯小百科 先进碳材料
石墨烯超级电容器 科研与写作 光电转化 分享即是快乐
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