Construction of an artificial zinc alloy layer toward stable zinc-metal anode  

作　　者：Long Jiang Yizhao Chai Dongdong Ji Liwei Li Le Li Bingan Lu Dongmin Li Jiang Zhou 

机构地区：[1]State Key Laboratory of Oil and Gas Equipment,CNPC Tubular Goods Research Institute,Xi'an,Shaanxi,710077,China [2]School of Materials Science and Engineering,Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province,Central South University,Changsha,410083,China [3]School of Physics and Electronics,Hunan University,Changsha,410082,China

出　　处：《Green Energy & Environment》2025年第2期382-389,共8页绿色能源与环境(英文版)

基　　金：supported by the Prospective Basic Research Projects of CNPC(Grant Nos.2022DJ5406,2022DJ5407,2022DJ5408,2022DJ4507,TGRI-2021-1,2022DQ03-03).

摘　　要：Aqueous zinc-ion batteries(AZIBs)present a promising option for next-generation batteries given their high safety,eco-friendliness,and resource sustainability.Nonetheless,the practical application of zinc anodes is hindered by inevitable parasitic reactions and dendrite growth.Here,zinc alloy layers(i.e.,ZnCo and ZnFe alloys)were rationally constructed on the zinc surface by chemical displacement reactions.The alloying process exposes more(002)planes of the ZnCo anode to guide the preferential and dendrite-free zinc deposition.Furthermore,the ZnCo alloy layer not only effectively inhibits water-induced side reactions but also accelerates electrode kinetics,enabling highly reversible zinc plating/stripping.As a result,the ZnCo anode achieves a Coulombic efficiency of 99.2%over 1300 cycles,and the ZnCo symmetric cell exhibits a long cycle life of over 2000 h at 4.4 mA cm^(-2).Importantly,the ZnCo//NH_(4)V_(4)O_(10)full cell retains a high discharge capacity of 218.4 mAh g^(-1)after 800 cycles.Meanwhile,the ZnFe-based symmetric cell also displays excellent cycling stability over 2500 h at 1.77 mA cm^(-2).This strategy provides a facile anode modification approach toward high-performance AZIBs.

关 键 词：Zinc metal anode Zinc alloys Chemical displacement Aqueous zinc-ion batteries 

分 类 号：TG1[金属学及工艺—金属学]