A Multifunctional Anti-Proton Electrolyte for High-Rate and Super-Stable Aqueous Zn-Vanadium Oxide Battery

作     者：Yangwu Chen Dingtao Ma Kefeng Ouyang Ming Yang Sicheng Shen Yanyi Wang Hongwei Mi Lingna Sun Chuanxin He Peixin Zhang Yangwu Chen;Dingtao Ma;Kefeng Ouyang;Ming Yang;Sicheng Shen;Yanyi Wang;Hongwei Mi;Lingna Sun;Chuanxin He;Peixin Zhang

作者机构：College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060People’s Republic of China 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2022年第14卷第9期

页      面：272-289页

核心收录：

学科分类：0808[工学-电气工程] 081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：financially supported by the National Natural Science Foundation of China(Nos.22178221,51774203) Shenzhen Science and Technology Program(Nos.JCYJ20200109105805902,JCYJ20200109105801725) Natural Science Foundation of Guangdong Province(Nos.2021A1515110751) China Postdoctoral Science Foundation(Nos.2021M702255)。 

主　　题：Zn-vanadium oxide battery Multifunctional anti-proton electrolyte Integrated synergetic modification “All-in-one”solution 

摘      要：Large volumetric expansion of cathode hosts and sluggish transport kinetics in the cathode–electrolyte interface,as well as dendrite growth and hydrogen evolution at Zn anode side are considered as the system problems that cause the electrochemical failure of aqueous Zn-vanadium oxide battery.In this work,a multifunctional anti-proton electrolyte was proposed to synchronously solve all those issues.Theoretical and experimental studies confirm that PEG 400 additive can regulate the Zn^(2+) solvation structure and inhibit the ionization of free water molecules of the electrolyte.Then,smaller lattice expansion of vanadium oxide hosts and less associated by-product formation can be realized by using such electrolyte.Besides,such electrolyte is also beneficial to guide the uniform Zn deposition and suppress the side reaction of hydrogen evolution.Owing to the integrated synergetic modifica-tion,a high-rate and ultrastable aqueous Zn-V_(2)O_(3)/C battery can be constructed,which can remain a specific capacity of 222.8 m Ah g^(-1)after 6000 cycles at 5 A g^(-1),and 121.8 m Ah g^(-1) even after 18,000 cycles at 20 A g^(-1),respectively.Such“all-in-onesolution based on the electrolyte design provides a new strategy for developing high-performance aqueous Zn-ion battery.