Low-temperature replacement construction of three-dimensional corrosion-resistant interface for deeply rechargeable Zn metal batteries  

作　　者：Jinze Li Daniel Rohrens Gianluca Dalfollo Xiaochao Wu Ziheng Lu Qiang Gao Bo Han Ruimin Sun Chenggang Zhou Jindi Wang Zhao Cai 

机构地区：[1]Faculty of Materials Science and Chemistry,China University of Geosciences,Wuhan,430074,China [2]Institute of Inorganic Chemistry,RWTH Aachen University,Aachen,52074,Germany [3]Microsoft Research AI4Science,Beijing,10080,China [4]Institute of New Energy on Chemical Storage and Power Sources,College of Applied Chemistry and Environmental Engineering,Yancheng Teachers University,Yancheng,224000,China

出　　处：《Nano Materials Science》2024年第3期329-336,共8页纳米材料科学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (No.22205068,22109144);the“CUG Scholar”Scientific Research Funds at China University of Geosciences (Wuhan) (Project No.2022118);the Fundamental Research Funds for the Central Universities,China University of Geosciences (Wuhan) (No.162301202673)。

摘　　要：Aqueous Zn batteries are promising candidates for grid-scale renewable energy storage.Foil electrodes have been widely investigated and applied as anode materials for aqueous Zn batteries,however,they suffer from limited surface area and severe interfacial issues including metallic dendrites and corrosion side reactions,limiting the depth of discharge(DOD)of the foil electrode materials.Herein,a low-temperature replacement reaction is utilized to in-situ construct a three-dimensional(3D)corrosion-resistant interface for deeply rechargeable Zn foil electrodes.Specifically,the deliberate low-temperature environment controlled the replacement rate between polycrystalline Zn metal and oxalic acid,producing a Zn foil electrode with distinct 3D corrosion-resistant interface(3DCI-Zn),which differed from conventional two-dimensional(2D)protective structure and showed an order of magnitude higher surface area.Consequently,the 3DCI-Zn electrode exhibited dendrite-free and anticorrosion properties,and achieved stable plating/stripping performance for 1000 h at 10 mA cm^(-2)and 10 mAh cm^(-2)with a remarkable DOD of 79%.After pairing with a MnO2cathode with a high areal capacity of 4.2 mAh cm^(-2),the pouch cells delivered 168 Wh L^(-1)and a capacity retention of 89.7%after 100 cycles with a low negative/positive(N/P)ratio of 3:1.

关 键 词：Aqueous batteries Foil electrodes Depth of discharge DENDRITES Corrosion side reactions 

分 类 号：TG172[金属学及工艺—金属表面处理] TM912[金属学及工艺—金属学]