Studies on the Capacitance of Nickel Oxide Films: Effect of Heating Temperature and Electrolyte Concentration
- 1 January 2000
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 147 (3) , 880-885
- https://doi.org/10.1149/1.1393286
Abstract
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°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. © 2000 The Electrochemical Society. All rights reserved.Keywords
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