热门
Corrosion behavior of a positive graphite electrode in vanadium redox flow battery
文献类型：期刊论文
| 作者 | H. J. Liu ; Q. Xu ; C. W. Yan ; Y. L. Qiao |
| 刊名 | Electrochimica Acta
 |
| 出版日期 | 2011 |
| 卷号 | 56期号:24页码:8783-8790 |
| ISSN号 | 0013-4686 |
| 关键词 | Vanadium redox flow battery Graphite electrode Gas evolution Corrosion Anodic polarization carbon-fiber surfaces electrochemical-cell oxygen evolution half-cell xps convection membrane kinetics |
| 中文摘要 | The graphite plate is easily suffered from corosion because of CO(2) evolution when it acts as the positive electrode for vanadium redox flow battery. The aim is to obtain the initial potential for gas evolution on a positive graphite electrode in 2 mol dm(-3) H(2)SO(4) + 2 mol dm(-3) VOSO(4) solution. The effects of polarization potential, operating temperature and polarization time on extent of graphite corrosion are investigated by potentiodynamic and potentiostatic techniques. The surface characteristics of graphite electrode before and after corrosion are examined by scanning electron microscopy, atomic force microscopy, and X-ray photoelectron spectroscopy. The results show that the gas begins to evolve on the graphite electrode when the anodic polarization potential is higher than 1.60 V vs saturated calomel electrode at 20 degrees C. The CO(2) evolution on the graphite electrode can lead to intergranular corrosion of the graphite when the polarization potential reaches 1.75 V. In addition, the functional groups of COOH and C=O introduced on the surface of graphite electrode during corrosion can catalyze the formation of CO(2), therefore, accelerates the corrosion rate of graphite electrode. (C) 2011 Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/30525]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | H. J. Liu,Q. Xu,C. W. Yan,et al. Corrosion behavior of a positive graphite electrode in vanadium redox flow battery[J]. Electrochimica Acta,2011,56(24):8783-8790. |
| APA | H. J. Liu,Q. Xu,C. W. Yan,&Y. L. Qiao.(2011).Corrosion behavior of a positive graphite electrode in vanadium redox flow battery.Electrochimica Acta,56(24),8783-8790. |
| MLA | H. J. Liu,et al."Corrosion behavior of a positive graphite electrode in vanadium redox flow battery".Electrochimica Acta 56.24(2011):8783-8790. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。