Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 113, Issue 30, Pages 13103-13107Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp902214f
Keywords
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Funding
- NSFC [20774047]
- MOST [2006CB932702]
- MOE [708020]
- NSF of Tianjin City [07JCYBJC03000, 08JCZDJC25300]
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Graphene materials (GMs) as supercapacitor electrode materials have been investigated. GMs are prepared from graphene oxide sheets, and subsequently suffer a gas-based hydrazine reduction to restore the conducting carbon network. A maximum specific capacitance of 205 F/g with a measured power density of 10 kW/kg at energy density of 28.5 Wh/kg in an aqueous electrolyte solution has been obtained. Meanwhile, the supercapacitor devices exhibit excellent long cycle life along with similar to 90% specific capacitance retained after 1200 cycle tests. These remarkable results demonstrate the exciting commercial potential for high performance, environmentally friendly and low-cost electrical energy storage devices based on this new 2D graphene material.
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