Fully exploited imidazolium bromide for simultaneous resolution of cathode and anode challenges in zinc-bromine batteries

Hu, Linyu1; Dai, Chunlong2; Zhu, Yudong3; Hou, Xu4; Liu, Zhimeng3; Geng, Xin3; Wang, Hailong3; Chen, Jing3; Sun, Nuo3; Rong, Qinlang3; Zhu, Yuhao5; He, Xin3; Lin, Yuanjing1

2024-06-01

10.1039/d4ee02096k

ENERGY & ENVIRONMENTAL SCIENCE   影响因子和分区

1754-5692

1754-5706

["Aqueous zinc-bromine (Zn-Br2) batteries feature operational safety and high-energy and high-power densities, but suffer from polybromide dissolution in the cathode and the low reversibility of Zn metal in the anode. Here, we demonstrate that these challenges can be simultaneously tackled by using a fully exploited imidazolium bromide (MPIBr). An in-depth analysis demonstrates that MPIBr enhances both the reversibility and kinetics of Zn anodes. This enhancement arises from MPI+ cations participating in the formation of an H2O-scarce inner Helmholtz plane, suppressing water-associated side reactions. Additionally, electron-donating Br- ions contribute to the Zn2+-solvation sheath, forming [Zn(H2O)5Br]+ that promotes Zn2+ migration and faster interfacial kinetics. Furthermore, the robust chelation between the MPI+ cation and Brx- species significantly impedes shuttling. Notably, the Br- anion and Zn2+ cation in the electrolyte can construct a dual-plating Zn-Br2 battery, eliminating the necessity for active materials on both the cathode and anode. The as-prepared dendrite-free and shuttle-free dual-plating Zn-Br2 batteries demonstrate stable cycling for 1000 cycles even under 100% depth of discharge. This work deepens the understanding of electrolyte composition on electrode interfaces, driving the advancement of high-performance and cost-effective Zn-halogen batteries.","An imidazolium bromide is developed to simultaneously tackle the challenges of the bromine cathode and the Zn anode in Zn-Br2 batteries."]

SCI ; EI

英语

第一 ; 通讯

National Natural Science Foundation of China["62201243","22309124"] ; Guangdong Basic and Applied Basic Research Foundation[2021A1515110627] ; Shenzhen Stable Support Plan Program for Higher Education Institutions Research Program[20220815153728002] ; Shenzhen Science and Technology Program[RCYX20231211090432060] ; China Postdoctoral Science Foundation Grant[2023M731509] ; Sichuan Provincial Natural Science Foundation["2024NSFSC1156","2023NSFSC1131"]

Chemistry ; Energy & Fuels ; Engineering ; Environmental Sciences & Ecology

Chemistry, Multidisciplinary ; Energy & Fuels ; Engineering, Chemical ; Environmental Sciences

WOS:001261902900001

ROYAL SOC CHEMISTRY

Web of Science

1.Southern Univ Sci & Technol, Sch Microelect, Shenzhen 518055, Peoples R China
2.Sichuan Univ, Coll Mat Sci & Engn, Chengdu 610065, Peoples R China
3.Sichuan Univ, Sch Chem Engn, Chengdu 610065, Peoples R China
4.Uppsala Univ, Dept Chem, Angstrom Lab, Uppsala, Sweden
5.Beijing Inst Technol, Sch Chem & Chem Engn, Beijing 100081, Peoples R China

Hu, Linyu,Dai, Chunlong,Zhu, Yudong,et al. Fully exploited imidazolium bromide for simultaneous resolution of cathode and anode challenges in zinc-bromine batteries[J]. ENERGY & ENVIRONMENTAL SCIENCE,2024.

Hu, Linyu.,Dai, Chunlong.,Zhu, Yudong.,Hou, Xu.,Liu, Zhimeng.,...&Lin, Yuanjing.(2024).Fully exploited imidazolium bromide for simultaneous resolution of cathode and anode challenges in zinc-bromine batteries.ENERGY & ENVIRONMENTAL SCIENCE.

Hu, Linyu,et al."Fully exploited imidazolium bromide for simultaneous resolution of cathode and anode challenges in zinc-bromine batteries".ENERGY & ENVIRONMENTAL SCIENCE (2024).