Study on Hydrogen Evolution Reaction at a Graphite Electrode in the All-Vanadium Redox Flow Battery

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	Study on Hydrogen Evolution Reaction at a Graphite Electrode in the All-Vanadium Redox Flow Battery
	F. Y. Chen; J. G. Liu; H. Chen; C. W. Yan
	2012
发表期刊	International Journal of Electrochemical Science
ISSN	1452-3981
卷号	7 期号:4 页码:3750-3764
摘要	The hydrogen evolution reaction in the negative half-cell of a vanadium redox battery is studied at a graphite electrode. Hydrogen evolution behavior is included by potentiostatic method. It is found that volume of hydrogen evolution goes up linearly at the first stage and then increases slowly at different polarization potential, concentration of sulfuric acid and V3+. The reason is adsorption hydrogen on graphite surface, with a trend toward an increase in electrical resistance and a decrease in the active surface area. The surface morphology and structural properties of graphite are investigated by scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS). The electrochemical performance of graphite is observed using cyclic voltammetry and impedance spectroscopy (EIS). It is shown that hydrogen evolution reaction changes surface morphology and introduces some defect sites on the surface of graphite. The electrochemical activity of graphite towards V3+/V2+ couple becomes less easily after hydrogen evolution treatment.
部门归属	[chen, fuyu; liu, jianguo; chen, hui; yan, chuanwei] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;chen, fy (reprint author), chinese acad sci, inst met res, state key lab corros & protect, 62 wencui rd, shenyang 110016, peoples r china.;fychen@imr.ac.cn
关键词	Hydrogen Evolution Graphite Electrochemical Activity Vanadium Battery Oxygen
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/59902
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	F. Y. Chen,J. G. Liu,H. Chen,et al. Study on Hydrogen Evolution Reaction at a Graphite Electrode in the All-Vanadium Redox Flow Battery[J]. International Journal of Electrochemical Science,2012,7(4):3750-3764.
APA	F. Y. Chen,J. G. Liu,H. Chen,&C. W. Yan.(2012).Study on Hydrogen Evolution Reaction at a Graphite Electrode in the All-Vanadium Redox Flow Battery.International Journal of Electrochemical Science,7(4),3750-3764.
MLA	F. Y. Chen,et al."Study on Hydrogen Evolution Reaction at a Graphite Electrode in the All-Vanadium Redox Flow Battery".International Journal of Electrochemical Science 7.4(2012):3750-3764.