Metallic zinc(Zn)is one of the most attractive multivalent-metal anode materi-als in post-lithium batteries because of its high abundance,low cost and high theoretical capac-ity.However,it usually suffers from large volt-age polarization,low Coulombic efficiency and high propensity for dendritic failure during Zn stripping/plating,hindering the practical applica-tion in aqueous rechargeable zinc-metal batteries(AR-ZMBs).Here we demonstrate that anionic surfactant-assisted in situ surface alloying of Cu and Zn remarkably improves Zn reversibility of 3D nanoporous Zn electrodes for potential use as high-performance AR-ZMB anode materials.As a result of the zincophilic ZnxCuy alloy shell guiding uniform Zn deposition with a zero nucleation overpotential and facilitating Zn stripping via the ZnxCuy/Zn galvanic couples,the self-supported nanoporous ZnxCuy/Zn electrodes exhibit superior dendrite-free Zn stripping/plating behaviors in ambient aqueous electrolyte,with ultralow polarizations under current densities up to 50 mA cm-2,exceptional stability for 1900 h and high Zn utilization.This enables AR-ZMB full cells constructed with nanoporous ZnxCuy/Zn anode and KzMnO2 cathode to achieve specific energy of as high as～430 Wh kg-1 with～99.8％Coulombic efficiency,and retain～86％after long-term cycles for＞700 h.

Huan Meng;Qing Ran;Tian-Yi Dai;Hang Shi;Shu-Pei Zeng;Yong-Fu Zhu;Zi Wen;Wei Zhang;Xing-You Lang;Wei-Tao Zheng;Qing Jiang

Key Laboratory of Automobile Materials(Jilin University),Ministry of Education,School of Materials Science and Engineering,and Electron Microscopy Center,Jilin University,Changchun 130022,People's Republic of China;State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun 130022,People's Republic of China

纳微快报（英文）

[1]Huan Meng;Qing Ran;Tian-Yi Dai;Hang Shi;Shu-Pei Zeng;Yong-Fu Zhu;Zi Wen;Wei Zhang;Xing-You Lang;Wei-Tao Zheng;Qing Jiang-.Surface-Alloyed Nanoporous Zinc as Reversible and Stable Anodes for High-Performance Aqueous Zinc-Ion Battery)[J].纳微快报（英文）,2022(08):58-71

ZMBs,ZMB,zincophilic,ZnxCuy,KzMnO2

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