Carbon enhanced nucleophilicity of Na_(3)V_(2)(PO_(4))_(3):A general approach for dendrite-free zinc metal anodes  

作　　者：Sijun Wang Lingzi Hu Xiaohui Li Dan Qiu Shunhang Qiu Qiancheng Zhou Wenwen Deng Xiaoying Lu Ze Yang Ming Qiu Ying Yu 

机构地区：[1]Institute of Nanoscience and Nanotechnology,School of Physical Science and Technology,Central China Normal University,Wuhan 430079,Hubei,China [2]School of Material Science and Engineering,Suzhou University of Science and Technology,Suzhou 215000,Jiangsu,China [3]Faculty of Science and Technology,Technological and Higher Education Institute of Hong Kong,Hong Kong,China

出　　处：《Journal of Energy Chemistry》2024年第4期203-212,共10页能源化学（英文版）

基　　金：financially supported by the National Key Research and Development Program of China(2022YFB3803600);the Fundamental Research Funds for the Central Universities(30106200463 and CCNU22CJ017);the National Natural Science Foundation of China(U20A20246);the Graduate Education Innovation Grant from Central China Normal University,China(20210407032)。

摘　　要：Zincophilic property and high electrical conductivity are both very important parameters to design novel Zn anode for aqueous Zn-ion batteries(AZIBs).However,single material is difficult to exhibit zincophilic property and high electrical conductivity at the same time.Herein,originating from theoretical calculation,a zincophilic particle regulation strategy is proposed to address these limitations and carbon coated Na_(3)V_(2)(PO_(4))_(3)is taken as an example to be a protective layer on zinc metal(NVPC@Zn).Na_(3)V_(2)(PO_(4))_(3)(NVP)is a common cathode material for Zn-ion batteries,which is zincophilic.Carbon materials not only offer an electron pathway to help Zn deposition onto NVPC surface,but also enhance the zinc nucleophilicity of Na_(3)V_(2)(PO_(4))_(3).Hence,this hybrid coating layer can tune zinc deposition and resist side reactions such as hydrogen generation and Zn metal corrosion.Experimentally,a symmetrical battery with NVPC@Zn electrode displays highly reversible plating/stripping behavior with a long cycle lifespan over 1800 h at2 mA cm^(-2),much better than carbon and Na_(3)V_(2)(PO_(4))_(3)solely modified Zn electrodes.When the Na_(3)V_(2)(PO_(4))_(3)is replaced with zincophobic Al2O3or zincophilic V2O3,the stability of the modified zinc anodes is also prolonged.This strategy expands the option of zincophilic materials and provides a general and effective way to stabilize the Zn electrode.

关 键 词：Zinc-ion batteries Zinc anode Carbon enhanced nucleophilicity Zincophilic particle regulation 

分 类 号：TM912[电气工程—电力电子与电力传动] O646.542[理学—物理化学]