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Zhong-Shuai Wu, Da-Wei Wang, Wencai Ren, Jinping Zhao, Guangmin Zhou, Feng Li and Hui-Ming Cheng Anchoring Hydrous RuO2 on Graphene Sheets for High-Performance Electrochemical Capacitors Advanced Functional Materials 20

Version of Record online: 23 AUG 2010 | DOI: 10.1002/adfm.201001054

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Hydrous ruthenium oxide/graphene sheet composites (ROGSCs) are prepared by combining a sol–gel method and low-temperature annealing. ROGSC-based electrochemical capacitors display high specific capacitance (570 F g−1 for 38.3 wt% Ru), enhanced rate capability, excellent electrochemical stability (˜97.9% after 1000 cycles), and high energy density (20.1 Wh kg−1) or power density (10000 W kg−1), due to positive synergistic effect.

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