期刊
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
卷 14, 期 4, 页码 681-686出版社
SPRINGER
DOI: 10.1007/s10008-009-0828-z
关键词
Molybdenum oxides; Nanostructure; Impedance spectroscopy; Capacitive behavior
Nanostructured molybdenum oxide having a particle size in the range of 30-80 nm was prepared by potentiodynamic electrodeposition method, and the effects of H2SO4 concentration on its capacitive behavior were studied by cyclic voltammetry, galvanostatic discharge, and electrochemical impedance spectroscopy. Poor to fair capacitive behaviors were witnessed depending on the electrolyte concentration and conditions of charge/discharge. Increasing acid concentration to 0.02 M had favorable effect, while beyond that, the effect was detrimental. Capacitance around 600 F g(-1) was recorded in the potential range of 0 to -0.55 V vs. Ag/AgCl.
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