Dual-function protective layer for highly reversible Zn anode  

作　　者：Jiaming Li Hanhao Liang Yini Long Xiao Yu Jiaqi Li Nan Li Junyi Han Jianglin Wang Zhanhong Yang 

机构地区：[1]Hunan Province Key Laboratory of Chemical Power Source,College of Chemistry and Chemical Engineering,Central South University,Changsha 410083,Hunan,China [2]Innovation Base of Energy and Chemical Materials for Graduate Students Training,Central South University,Changsha 410083,Hunan,China

出　　处：《Journal of Energy Chemistry》2024年第11期12-23,共12页能源化学（英文版）

基　　金：Natural Science Foundation of Hunan Province (No.2020JJ4734);High Performance Computing Center of Central South University。

摘　　要：The thermodynamic instability of zinc anodes in aqueous electrolytes leads to issues such as corrosion,hydrogen evolution reactions(HER), and dendrite growth, severely hindering the practical application of zinc-based aqueous energy storage devices. To address these challenges, this work proposes a dualfunction zinc anode protective layer, composed of Zn-Al-In layered double oxides(ILDO) by rationally designing Zn-Al layered double hydroxides(Zn-Al LDHs) for the first time. Differing from previous works on the LDHs coatings, firstly, the ILDO layer accelerates zinc-ion desolvation and also captures and anchors SO_(4)^(2-). Secondly, the in-situ formation of the Zn-In alloy phase effectively lowers the nucleation energy barrier, thereby regulating zinc nucleation. Consequently, the zinc anode with the ILDO protective layer demonstrates long-term stability exceeding 1900 h and low voltage hysteresis of 7.5 m V at 0.5 m A cm^(-2) and 0.5 m A h cm^(-2). Additionally, it significantly enhances the rate capability and cycling performance of Zn@ILDO//MnO_(2) full batteries and Zn@ILDO//activated carbon zinc-ion hybrid capacitors.This simple and effective dual-function protective layer strategy offers a promising approach for achieving high-performance zinc-ion batteries.

关 键 词：Protection layer Zn-Al-In layered double oxide Captures and anchors SO_(4)^(2-) Zn-In alloy phase Zn metal anode 

分 类 号：O646[理学—物理化学] TM912[理学—化学]