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- Title
Potentiodynamical deposition of nanosized manganese oxides as high capacitance electrochemical capacitors.
- Authors
En-Hui Liu; Rui Ding; Xiang-Yun Meng; Song-Ting Tan; Ji-Cheng Zhou
- Abstract
Nanosized manganese oxides powders were potentiodynamically deposition onto the Pb substrates by anodic oxidation in 0.5 mol L−1 MnSO4 and 0.5 mol L−1 H2SO4 mixed solution at 40 °C. The chemical composition of the sample was determined by complex titration with ethylene diamine tetraacetic acid and redox titration. X-ray diffraction, scanning electron microscopy, cyclic voltammetry, and chronopotentiometry were employed to characterize the materials. The highest specific capacitance of the MnOx composite electrode was up to 420 F g−1 in 1.0 mol L−1 Na2SO4 electrolyte at the scan rate 5 mV s−1. The synthesized nanosized manganese oxide exhibited ideal capacitive behavior indicating a promising electrode material for electrochemical supercapacitors.
- Subjects
NANOCRYSTALS; SEMICONDUCTOR nanocrystals; MANGANESE oxides; ELECTROCHEMICAL analysis; PARTICLES (Nuclear physics); THERMOPHYSICAL properties; ISOSTATIC pressing; PHASE transitions
- Publication
Journal of Materials Science: Materials in Electronics, 2007, Vol 18, Issue 12, p1179
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-007-9369-3