Journal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume 150, Issue 3, Pages D56-D62Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.1541675
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Mn/Pb and Mn/Ni mixed oxide were prepared at ambient temperature by reduction of KMnO4 with Mn, Pb, and Ni salts. This low-temperature approach provides amorphous structure of the active material. The specific capacitance of pure MnO2 was estimated to be 166 F/g and increased to 210 and 185 F/g for Mn/Ni and Mn/Pb oxides, respectively. The carbon loading was optimized at 20 wt %. Based on a single electrode, the Mn/Ni mixed oxide showed a high rate capability of 3.12 Wh/kg at constant power discharge of 1 kW/kg. (C) 2003 The Electrochemical Society.
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