Cost-Effective Membrane and Advanced Electrode for Stable Polysulfide-Ferricyanide Flow Battery

作     者：Xuechun Lou Hu Fu Jian Xu Yong Long Su Yan Haitao Zou Bo Lu Murong He Mei Ding Xiaobo Zhu Chuankun Jia 

作者机构：College of Materials Science and EngineeringChangsha University of Science&TechnologyChangsha 410114China National Engineering Laboratory of Highway Maintenance TechnologySchool of Traffic&Transportation EngineeringChangsha University of Science&TechnologyChangsha 410114China 

出 版 物：《Energy Material Advances》 (能源材料前沿（英文）)

年 卷 期：2022年第2022卷第1期

页      面：344-354页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：We acknowledge financial support from the 100 Talented Team of Hunan Province(XiangZu91) the“Huxiang High-Level Talents”program(2019RS1046 and 2018RS3077) the Open Fund of National Engineering Laboratory of Highway Maintenance Technology(Changsha University of Science and Technology)(kfj170105) the Natural Science Foundation of Hunan Province(2020JJ5566) the Outstanding Young Talent Project of Education Department of Hunan Province(19B029) 

主　　题：sulfide electrode replace 

摘      要：Based on inexpensive,safe,and environmentally friendly active redox species,neutral polysulfide-ferrocyanide redox flow batteries(PFRFBs)have attracted much attention for large-scale energy ***,the development of PFRFBs is undermined by the expensive commercial membrane materials as well as the sluggish polysulfide redox *** work attempts to solve these critical problems by combining the economical membrane with the highly catalytic *** specific,K^(+)-exchanged sulfonated polyether ether ketone(SPEEK-K)membranes have been investigated in PFRFBs to replace the costly Nafion ***-K with optimized degree of sulfonation enables the PFRFB high average coulombic efficiency of 99.80%and superior energy efficiency of 90.42%at a current density of 20mAcm^(-2).Meanwhile,to overcome the kinetic limitations of polysulfide redox reactions,a CuS-modified carbon felt electrode is demonstrated with excellent catalytic performance,enabling the PFRFB higher and more stable energy efficiency over *** combination of the cost-effective membrane with the catalytic electrode in one cell leads to a capacity retention of 99.54%after 1180 cycles and an outstanding power density(up to 223mWcm^(-2)).The significant enhancements of electrochemical performance at reduced capital cost will make the PFRFB more promising for large-scale energy storage systems.