Energy Storage Science and Technology ›› 2022, Vol. 11 ›› Issue (4): 1246-1263.doi: 10.19799/j.cnki.2095-4239.2022.0009

• Special issue of International Outstanding Young Scientists for Energy Storage • Previous Articles     Next Articles

Status and prospects of organic eletroactive species for aqueous organic redox flow batteries

Kang PENG(), Junmin LIU, Gonggen TANG, Zhengjin YANG(), Tongwen XU   

  1. School of Chemistry and Materials, University of Science and Technololy, Hefei 230026, Anhui, China
  • Received:2022-01-05 Revised:2022-01-20 Online:2022-04-05 Published:2022-04-11
  • Contact: Zhengjin YANG E-mail:pengkang@ustc.edu.cn;yangzj09@ustc.edu.cn

Abstract:

Aqueous organic redox flow batteries (AORFBs) represent a promising technology for large-scale storage and efficient utilization of renewable energy. In this paper, we thoroughly review organic electroactive species against four important performance parameters (energy density, power density, efficiency, and cycle life), based on the current status of AORFB research. For the different organic electroactive molecules, we clarify the effects on AORFB performance of solubility, potential, electron number, electrochemical redox kinetics, size, and chemical stability. The development of AORFBs shows favorable prospects relative to lithium iron phosphate batteries, lead carbon batteries, and all-vanadium redox flow batteries. AORFBs with energy density ≥30 Wh/L, maximum discharge power density ≥300 mW/cm2, energy efficiency ≥80%, and capacity retention rate ≤0.05%/d can be expected to compete in the long-term energy storage market.

Key words: aqueous organic redox flow batteries, energy density, power density, efficiency, cycle life

CLC Number: