The catalytic effect of bismuth for VO2+/VO2+ and V3+/V2+ redox couples in vanadium flow batteries
文献类型：期刊论文
| 作者 | Zhang, Hongzhang2,3; Zhang, Huamin2,3; Yang, Xiaofei1,2; Liu, Tao2; Xu, Chi1,2; Li, Xianfeng2,3 |
| 刊名 | JOURNAL OF ENERGY CHEMISTRY
 |
| 出版日期 | 2017 |
| 卷号 | 26页码:1-7 |
| 关键词 | Vanadium Flow Battery Bismuth Catalysis Electrochemical Activity Energy Efficiency |
| DOI | 10.1016/j.jechem.2016.09.007 |
| 英文摘要 | The effect of bismuth (Bi) for both VO2+/VO2+ and V3+/V2+ redox couples in vanadium flow batteries (VFBs) has been investigated by directly introducing Bi on the surface of carbon felt (CF). The results show that Bi has no catalytic effect for VO2+/VO2(+) redox couple. During the first charge process, Bi is oxidized to Bi3+ (never return back to Bi metal in the subsequent cycles) due to the low standard redox potential of 0.308 V (vs. SHE) for Bi3+/Bi redox couple compared with VO2+/VO2+ redox couple and Bi3+ exhibit no (or neglectable) electro-catalytic activity. Additionally, the relationship between Bi loading and electrochemical activity for V3+/V2+ redox couple was studied in detail. 2 wt% Bi-modified carbon felt (2%-BiCF) exhibits the highest electrochemical activity. Using it as negative electrode, a high energy efficiency (EE) of 79.0% can be achieved at a high current density of 160 mA/cm(2), which is 5.5% higher than the pristine one. Moreover, the electrolyte utilization ratio is also increased by more than 30%. Even the cell operated at 140 mA/cm(2) for over 300 cycles, the EE can reach 80.9% without obvious fluctuation and attenuation, suggesting excellent catalytic activity and electrochemical stability in VFBs. (C) 2016 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000401302600001 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/152250]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Div Energy Storage, Dalian 116023, Liaoning, Peoples R China 3.Collaborat Innovat Ctr Chem Energy Mat iChEM, Dalian 116023, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Hongzhang,Zhang, Huamin,Yang, Xiaofei,et al. The catalytic effect of bismuth for VO2+/VO2+ and V3+/V2+ redox couples in vanadium flow batteries[J]. JOURNAL OF ENERGY CHEMISTRY,2017,26:1-7. |
| APA | Zhang, Hongzhang,Zhang, Huamin,Yang, Xiaofei,Liu, Tao,Xu, Chi,&Li, Xianfeng.(2017).The catalytic effect of bismuth for VO2+/VO2+ and V3+/V2+ redox couples in vanadium flow batteries.JOURNAL OF ENERGY CHEMISTRY,26,1-7. |
| MLA | Zhang, Hongzhang,et al."The catalytic effect of bismuth for VO2+/VO2+ and V3+/V2+ redox couples in vanadium flow batteries".JOURNAL OF ENERGY CHEMISTRY 26(2017):1-7. |
入库方式： OAI收割
来源：大连化学物理研究所
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