储能科学与技术 ›› 2020, Vol. 9 ›› Issue (6): 1668-1677.doi: 10.19799/j.cnki.2095-4239.2020.0171

• 储能材料与器件 • 上一篇    下一篇

铁基氧化还原液流电池研究进展及展望

郭定域(), 蒋峰景(), 张竹涵   

  1. 上海交通大学机械与动力工程学院,上海 200240
  • 收稿日期:2020-05-11 修回日期:2020-05-30 出版日期:2020-11-05 发布日期:2020-10-28
  • 通讯作者: 蒋峰景 E-mail:dingyuguo@sjtu.edu.cn;jfjzz@sjtu.edu.cn
  • 作者简介:郭定域(1996—),男,硕士研究生,从事液流电池储能研究,E-mail:dingyuguo@sjtu.edu.cn

Research progresses in iron-based redox flow batteries

Dingyu GUO(), Fengjing JIANG(), Zhuhan ZHANG   

  1. College of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China
  • Received:2020-05-11 Revised:2020-05-30 Online:2020-11-05 Published:2020-10-28
  • Contact: Fengjing JIANG E-mail:dingyuguo@sjtu.edu.cn;jfjzz@sjtu.edu.cn

摘要:

液流电池作为大规模储能技术,具有广泛的应用前景。但是目前主流液流电池由于成本过高导致商业化进程缓慢。利用液流电池技术实现大规模储能需要大量包含电化学活性物质的电解液,通常由不同价态的金属、离子化合物、溶剂及添加剂组成。由于铁元素具有储量丰富、环保无污染等优点,铁单质或铁的化合物是液流电池的正负极活性物质的理想材料,受到了研究人员的广泛关注。基于现有的研究工作,综述了不同类型的铁基混合液流电池和全液流电池的研究进展,梳理讨论了形成不同铁液流电池性能差异的影响因素如析氢、溶解度、电导率、反应动力学等,最后总结并展望了铁基液流电池的发展趋势和前景,提出需要进一步研究降低电极析氢的措施,探索经济且活性物质易回收的方案,提高电极的稳定性,并探索新的电极结构和水系液流电池体系。

关键词: 液流电池, 储能, 低成本, 铁基液流电池, 清洁可再生能源

Abstract:

Redox flow batteries (RFBs) are promising large-scale energy storage technologies. The commercialization of main RFBs is slow due to their high cost. Large-scale energy storage using RFBs consumes a large amount of electrolytes consisting of metals of different valences, ionic compounds, solvents, and additives. Elemental iron and iron compounds are the ideal active materials of positive and negative electrodes due to their abundant reserves and being environment friendly, and they have also been widely investigated. The research progress of iron-based RFBs in the recent years is briefly reviewed in this study. The iron-based RFBs are divided into hybrid iron-based RFBs and all-liquid iron-based RFBs based on the different active material states. The hybrid iron-based RFBs in the acid and alkaline condition are discussed. The factors influencing the RFB performance, such as hydrogen evolution, solubility, conductivity, and kinetics, are briefly described. The influence of complexing agents on solubility and kinetics is discussed. Different kinds of additives that inhibit the hydrogen evolution are introduced to improve the charging efficiency. The inhibition of the hydrogen evolution and the stability of the electrode capacity should be further improved, and new electrode structure and innovative aqueous RFB systems should be investigated.

Key words: redox flow battery, energy storage, low cost, iron-based redox flow battery, renewable energy

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