Regulating Zn Deposition via an Artificial Solid–Electrolyte Interface with Aligned Dipoles for Long Life Zn Anode  

作　　者：Kai Wu Jin Yi Xiaoyu Liu Yang Sun Jin Cui Yihua Xie Yuyu Liu Yongyao Xia Jiujun Zhang 

机构地区：[1]Institute for Sustainable Energy/College of Sciences,Shanghai University,99 Shangda Road,Shanghai 200444,People’s Republic of China [2]School of Materials,Sun Yat-Sen University,Guangzhou 510006,People’s Republic of China [3]Department of Chemistry and Institute of New Energy,Fudan University,Shanghai 200433,People’s Republic of China

出　　处：《Nano-Micro Letters》2021年第5期107-117,共11页纳微快报（英文版）

基　　金：the partial financial support from the National Natural Science Foundation of China(21935003 and 21805182);National Key Research and Development Plan(2016YFB0901503);Shanghai Pujiang Program(18PJ1403800);the support from the Hundreds of Talents program of Sun Yat-sen University。

摘　　要：Aqueous zinc ion batteries show prospects for next-generation renewable energy storage devices.However,the practical applications have been limited by the issues derived from Zn anode.As one of serious problems,Zn dendrite growth caused from the uncontrollable Zn deposition is unfavorable.Herein,with the aim to regulate Zn deposition,an artificial solid–electrolyte interface is subtly engineered with a perovskite type material,BaTiO3,which can be polarized,and its polarization could be switched under the external electric field.Resulting from the aligned dipole in BaTiO3 layer,zinc ions could move in order during cycling process.Regulated Zn migration at the anode/electrolyte interface contributes to the even Zn stripping/plating and confined Zn dendrite growth.As a result,the reversible Zn plating/stripping processes for over 2000 h have been achieved at 1 mA cm^(−2) with capacity of 1 mAh cm−2.Furthermore,this anode endowing the electric dipoles shows enhanced cycling stability for aqueous Zn-MnO2 batteries.The battery can deliver nearly 100%Coulombic efficiency at 2 Ag^(−1) after 300 cycles.

关 键 词：Regulated Zn deposition Artificial solid-electrolyte interface Perovskite type dielectric material Zn anode Zn ion battery 

分 类 号：TB34[一般工业技术—材料科学与工程] TN912[电子电信—通信与信息系统]