能源化学(英文版)

能源化学(英文) ›› 2018, Vol. 27 ›› Issue (5): 1269-1291.DOI: 10.1016/j.jechem.2018.04.007

• Preface • 上一篇    下一篇

A review of electrolyte additives and impurities in vanadium redox flow batteries

Liuyue Caoa,c, Maria Skyllas-Kazacosa,c, Chris Menictasb,c, Jens Noackc,d   

  1. a School of Chemical Engineering, UNSW Sydney, 2052 NSW, Australia;
    b School of Mechanical and Manufacturing Engineering, UNSW Sydney, NSW 2052 Australia;
    c CENELEST, German-Australian Alliance for Electrochemical Technologies for Storage of Renewable Energy, School of Mechanical and Manufacturing Engineering, UNSW Sydney, NSW 2052, Australia;
    d Fraunhofer-Institute for Chemical Technology, Joseph-von-Fraunhofer-Str. 7, 76327 Pfinztal, Germany
  • 收稿日期:2017-12-18 修回日期:2018-04-10 出版日期:2018-09-15 发布日期:2018-09-15
  • 通讯作者: Maria Skyllas-Kazacos,E-mail address:m.kazacos@unsw.edu.au

A review of electrolyte additives and impurities in vanadium redox flow batteries

Liuyue Caoa,c, Maria Skyllas-Kazacosa,c, Chris Menictasb,c, Jens Noackc,d   

  1. a School of Chemical Engineering, UNSW Sydney, 2052 NSW, Australia;
    b School of Mechanical and Manufacturing Engineering, UNSW Sydney, NSW 2052 Australia;
    c CENELEST, German-Australian Alliance for Electrochemical Technologies for Storage of Renewable Energy, School of Mechanical and Manufacturing Engineering, UNSW Sydney, NSW 2052, Australia;
    d Fraunhofer-Institute for Chemical Technology, Joseph-von-Fraunhofer-Str. 7, 76327 Pfinztal, Germany
  • Received:2017-12-18 Revised:2018-04-10 Online:2018-09-15 Published:2018-09-15
  • Contact: Maria Skyllas-Kazacos,E-mail address:m.kazacos@unsw.edu.au

摘要： As one of the most important components of the vanadium redox flow battery (VRFB), the electrolyte can impose a significant impact on cell properties, performance and capital cost. In particular, the electrolyte composition will influence energy density, operating temperature range and the practical applications of the VRFB. Various approaches to increase the energy density and operating temperature range have been proposed. The presence of electrolyte impurities, or the addition of a small amount of other chemical species into the vanadium solution can alter the stability of the electrolyte and influence cell performance, operating temperature range, energy density, electrochemical kinetics and cost effectiveness. This review provides a detailed overview of research on electrolyte additives including stabilizing agents, immobilizing agents, kinetic enhancers, as well as electrolyte impurities and chemical reductants that can be used for different purposes in the VRFBs.

关键词: Vanadium redox flow battery, Electrolyte additive, Precipitation inhibitor, Stabilizing agent, Kinetic enhancer, Impurity, Immobilizing agents, Reducing agent

Abstract: As one of the most important components of the vanadium redox flow battery (VRFB), the electrolyte can impose a significant impact on cell properties, performance and capital cost. In particular, the electrolyte composition will influence energy density, operating temperature range and the practical applications of the VRFB. Various approaches to increase the energy density and operating temperature range have been proposed. The presence of electrolyte impurities, or the addition of a small amount of other chemical species into the vanadium solution can alter the stability of the electrolyte and influence cell performance, operating temperature range, energy density, electrochemical kinetics and cost effectiveness. This review provides a detailed overview of research on electrolyte additives including stabilizing agents, immobilizing agents, kinetic enhancers, as well as electrolyte impurities and chemical reductants that can be used for different purposes in the VRFBs.

Key words: Vanadium redox flow battery, Electrolyte additive, Precipitation inhibitor, Stabilizing agent, Kinetic enhancer, Impurity, Immobilizing agents, Reducing agent