Charge storage capabilities of rutile-type RuO2-VO2 solid solution for electrochemical supercapacitors
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Sugimoto, W
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Shibutani, T
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Shinshu Univ, Fac Text Sci & Technol, Dept Fine Mat Engn, Ueda, Nagano 3868567, JapanShinshu Univ, Fac Text Sci & Technol, Dept Fine Mat Engn, Ueda, Nagano 3868567, Japan
Shibutani, T
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Murakami, Y
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Shinshu Univ, Fac Text Sci & Technol, Dept Fine Mat Engn, Ueda, Nagano 3868567, JapanShinshu Univ, Fac Text Sci & Technol, Dept Fine Mat Engn, Ueda, Nagano 3868567, Japan
Murakami, Y
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Takasu, Y
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Shinshu Univ, Fac Text Sci & Technol, Dept Fine Mat Engn, Ueda, Nagano 3868567, JapanShinshu Univ, Fac Text Sci & Technol, Dept Fine Mat Engn, Ueda, Nagano 3868567, Japan
Takasu, Y
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[1] Shinshu Univ, Fac Text Sci & Technol, Dept Fine Mat Engn, Ueda, Nagano 3868567, Japan
Ultrafine ruthenium-vanadate particles possessing a rutile-type structure, Ru1-xVxO2, were prepared by a polymerizable-complex method and their electrochemical supercapacitor behavior was studied by cyclic voltammetry in an acidic solution. The solid solution exhibited enhanced supercapacitive properties compared to pure RuO2. The present electrode material possessed excellent cyclability and specific capacitance. Specific capacitance exceeding 1200 F g(-1) of RuO2 was obtained for Ru0.35V0.65O2. (C) 2002 The Electrochemical Society.