Journal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume 147, Issue 3, Pages 880-885Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.1393286
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Nickel oxide films were prepared by electrochemically precipitating the hydroxide and heating it in air to form the oxide. The resulting oxide films behave as a capacitor The capacitance of the oxide depends on the heating temperature, showing a maximum at 300 degrees C. The mechanism of charge storage was studied by measuring the capacitance and surface area as a function of heating temperature, and the capacitance in different electrolytes and potential windows. The charge-storage mechanism is believed to be a surface redox reaction involving adsorbed hydroxyl ions. (C) 2000 The Electrochemical Society. S0013-4651(99)07-034-2. All rights reserved.
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