Arylene Diimide Derivatives as Anolyte Materials with Two-Electron Storage for Ultrastable Neutral Aqueous Organic Redox Flow Batteries  

作　　者：Xu Liu Xuri Zhang Chaoyu Bao Zengrong Wang Heng Zhang Guoping Li Ni Yan Ming-Jia Li Gang He 

机构地区：[1]Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education,School of Energy and Power Engineering,Xi’an Jiaotong University,Xi’an,Shaanxi Province 710049 [2]Frontier Institute of Science and Technology,Xi’an Jiaotong University,Xi’an,Shaanxi Province 710054 [3]School of Materials Science and Engineering,Engineering Research Center of Transportation Materials,Ministry of Education,Chang’an University,Xi’an,Shaanxi Province 710064

出　　处：《CCS Chemistry》2023年第10期2334-2347,共14页中国化学会会刊(英文)

基　　金：supported by the Natural Science Foundation of China(grant nos.22175138 and 21875180);the National Key Research and Development Program of China(grant no.2021YFB3200700);the Key Research and Development Program of Shaanxi(grant no.2021GXLH-Z023);the Independent Innovation Capability Improvement Project of Xi’an Jiaotong University(grant no.PY3A066);the Fundamental Research Funds for the Central Universities(grant no.xhj032021008-03);the Regional Innovation Capability Guidance Program of Shaanxi Province the Fundamental(grant no.2022QFY08-01);the Research Funds for the Central Universities(grant no.xzy022022001).

摘　　要：Two-electron neutral aqueous organic redox flow batteries(AORFBs)hold more promising applications in the power grid than one-electron batteries because of their higher capacity.However,their development is strongly limited by the structural instability of the highly reduced species.By combining the extendedπ-conjugation structure of the anolytes and the enhanced aromaticity of the highly reduced species,we reported a series of highly conjugated and inexpensive arylene diimide derivatives(NDI,PDI,and TPDI)as novel two-electron storage anolyte materials for ultrastable AORFBs.Matched with(ferrocenylmethyl)trimethylammonium chloride(FcNCl)as catholyte,arylene diimide derivative-based AORFBs showed the highest stability in two-electron AORFBs to date.The NDI/FcNCl-based AORFB delivered 98.44%capacity retention at 40 mA cm^(−2)for 350 cycles;TPDI/FcNCl-based AORFB also showed remarkable stability with 97.22%capacity retention at 20 mA cm^(−2)over 200 cycles.This finding lays the theoretical foundation and offers a reference for improving the stability of two-electron AORFBs.

关 键 词：energy storage organic flow battery anolyte materials arylene diimide derivatives twoelectron storage 

分 类 号：TM53[电气工程—电器] TQ317[化学工程—高聚物工业]