Research progress of iodine-based flow battery system
GE Hongjiang
PAN Xingkang
CHENG Jing
YANG Weihua
REN Lihua
Abstract：Flow batteries are among the technologies with significant potential for large-scale energy storage,but their low energy density has hindered further development.The characteristics of redox active material largely determines the cost,energy density and battery performance of the flow battery.As the positive electrode active material,iodine has the advantages of high solubility and high energy density.This paper reviews the research progress of Li-I2 flow batteries,Zn-I2 flow batteries,polysulfide-I2 flow batteries,and Sn-I2 flow batteries,focusing on the electrolyte,diapHragm and electrode.Compared with the all-vanadium flow battery that is closest to commercialization,the advantages and disadvantages of iodine-based flow batteries are evaluated.On this basis,this paper discusses the key points of future research directions of iodine-based flow batteries,in order to provide new ideas for the further development of iodine-based flow batteries.
Keywords：flow batteryiodineenergy storageenergy density
Publication Date：2025-08-25
Online Publishing Date：2025-09-22(First online date of this platform, not the publication date of the document)
Pages：6( 311-316 )