期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 28, 期 -, 页码 58-62出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2012.12.011
关键词
On-line mass spectrometry; Graphite electrode; Electrochemical corrosion; Anodic polarization; Vanadium redox flow battery
资金
- Natural Basic Research Program of China [2010CB227203]
- Fundamental Research Funds for the Central Universities [N100602009]
The electrochemical corrosion of the graphite electrode for vanadium redox flow battery is investigated by on-line mass spectrometry analysis. The results show that CO2 and CO form and evolve more preferably than O-2 on the graphite anode, which lead to the electrochemical corrosion of the graphite electrode. Furthermore, the evolution rate of O-2 is the highest one among evolved gases if the polarization potential becomes too positive. The oxidation of VO2+ on the graphite electrode in 2 M H2SO4 + 2 M VOSO4 hinders the carbon oxidation reaction and retards the electrochemical corrosion of the graphite electrode. (C) 2012 Elsevier B.V. All rights reserved.
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