能源化学(英文版)

能源化学(英文) ›› 2018, Vol. 27 ›› Issue (5): 1333-1340.DOI: 10.1016/j.jechem.2018.01.028

• Preface • 上一篇    下一篇

Broad temperature adaptability of vanadium redox flow battery-part 4: Unraveling wide temperature promotion mechanism of bismuth for V2+/V3+ couple

Yuchen Liua,b, Feng Lianga, Yang Zhaob, Lihong Yuc, Le Liub, Jingyu Xib   

  1. a The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China;
    b Institute of Green Chemistry and Energy, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, Guangdong, China;
    c School of Applied Chemistry and Biological Technology, Shenzhen Polytechnic, Shenzhen 518055, Guangdong, China
  • 收稿日期:2017-11-24 修回日期:2018-01-23 出版日期:2018-09-15 发布日期:2018-09-15
  • 通讯作者: Jingyu Xi,E-mail address:xijy@tsinghua.edu.cn
  • 基金资助:

    The authors appreciate financial support from the National Natural Science Foundation of China (No. 21576154), the Open Fund of The State Key Laboratory of Refractories and Metallurgy (No. G201809), and the Shenzhen Basic Research Project (Nos. JCYJ20170412170756603 and JCYJ20170307152754218).

Broad temperature adaptability of vanadium redox flow battery-part 4: Unraveling wide temperature promotion mechanism of bismuth for V2+/V3+ couple

Yuchen Liua,b, Feng Lianga, Yang Zhaob, Lihong Yuc, Le Liub, Jingyu Xib   

  1. a The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China;
    b Institute of Green Chemistry and Energy, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, Guangdong, China;
    c School of Applied Chemistry and Biological Technology, Shenzhen Polytechnic, Shenzhen 518055, Guangdong, China
  • Received:2017-11-24 Revised:2018-01-23 Online:2018-09-15 Published:2018-09-15
  • Contact: Jingyu Xi,E-mail address:xijy@tsinghua.edu.cn
  • Supported by:

    The authors appreciate financial support from the National Natural Science Foundation of China (No. 21576154), the Open Fund of The State Key Laboratory of Refractories and Metallurgy (No. G201809), and the Shenzhen Basic Research Project (Nos. JCYJ20170412170756603 and JCYJ20170307152754218).

摘要： Vanadium flow battery (VFB) is a fast going and promising system for large-scale stationary energy storage. However, drawbacks such as low power density and narrow temperature window caused by poor catalytic activity of graphite felt (GF) electrodes limit its worldwide application. In this paper, bismuth, as a low-cost, no-toxic and high-activity electrocatalyst, is used to modify the thermal activated GF (TGF) via a facile hydrothermal method. Bismuth can effectively inhibit the side reaction of hydrogen evolution in wide temperature range, while promoting the V2+/V3+ redox reaction. As a result, the VFB assembled with Bi/TGF as negative electrode demonstrates outstanding rate performance under the current density up to 400 mA cm-2, as well as a long-term stability over 600 charging/discharging cycles at a high current density of 150 mA cm-2. Moreover, it also shows excellent temperature adaptability from -10℃ to 50℃ and high durability for life test at the temperature of 50℃.

关键词: Vanadium flow battery, Graphite felt electrode, Bismuth, Hydrogen evolution reaction, Wide temperature

Abstract: Vanadium flow battery (VFB) is a fast going and promising system for large-scale stationary energy storage. However, drawbacks such as low power density and narrow temperature window caused by poor catalytic activity of graphite felt (GF) electrodes limit its worldwide application. In this paper, bismuth, as a low-cost, no-toxic and high-activity electrocatalyst, is used to modify the thermal activated GF (TGF) via a facile hydrothermal method. Bismuth can effectively inhibit the side reaction of hydrogen evolution in wide temperature range, while promoting the V2+/V3+ redox reaction. As a result, the VFB assembled with Bi/TGF as negative electrode demonstrates outstanding rate performance under the current density up to 400 mA cm-2, as well as a long-term stability over 600 charging/discharging cycles at a high current density of 150 mA cm-2. Moreover, it also shows excellent temperature adaptability from -10℃ to 50℃ and high durability for life test at the temperature of 50℃.

Key words: Vanadium flow battery, Graphite felt electrode, Bismuth, Hydrogen evolution reaction, Wide temperature