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 ∼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. © 2009 American Chemical Society.
CITATION STYLE
Wang, Y., Shi, Z., Huang, Y., Ma, Y., Wang, C., Chen, M., & Chen, Y. (2009). Supercapacitor devices based on graphene materials. Journal of Physical Chemistry C, 113(30), 13103–13107. https://doi.org/10.1021/jp902214f
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