A robust Janus bilayer with tailored ionic conductivity and interface stability for stable Li metal anodes

作     者：Guodong Zhang Pengwei Li Kai Chen Hongfei Zheng Wei He Liangping Xiao Xingyun Li Qingchi Xu Jian Weng Jun Xu Guodong Zhang;Pengwei Li;Kai Chen;Hongfei Zheng;Wei He;Liangping Xiao;Xingyun Li;Qingchi Xu;Jian Weng;Jun Xu

作者机构：Department of BiomaterialsCollege of MaterialsXiamen UniversityXiamen 361005FujianChina bDepartment of PhysicsResearch Institute for Biomimetics and Soft MatterFujian Provincial Key Laboratory for Soft Functional MaterialsXiamen UniversityXiamen 361005FujianChina Shenzhen Research Institute of Xiamen UniversityShenzhen 518057GuangdongChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2022年第31卷第11期

页      面：368-375,I0010页

核心收录：

学科分类：081704[工学-应用化学] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 

基　　金：financially supported by the National Natural Science Foundation of China(21771154) the Shenzhen Fundamental Research Programs(JCYJ20190809161013453) the Fundamental Research Funds for the Central Universities(20720220031) the 111 Project(B16029) 

主　　题：Graphene oxide(GO) Black phosphorus(BP) Artificial interface Janus bilayer Li metal batteries 

摘      要：The formation and growth of Li-dendrites caused by inhomogeneous Li deposition severely hinder the commercial applications of Li metal batteries due to the consequence of ***,we propose a Janus bilayer composed of black phosphorus(BP)and graphene oxide(GO)as an artificial interface with chemical/mechanical stability and well-regulated Li-ion flux distribution for Li metal anode *** to the synergy between the fast Li-ion transport of BP in the inner layer and the high mechanical and chemical stability of GO in the outer layer,the GO/BP with good electrolyte wettability acts as a Li-ion regulator that can induce homogeneous growth of Li to suppress the Li dendrites ***,long-term stability(500 h at 1 mA cm^(-2))with a low overpotential of 30 mV is achieved in the symmetric cell with GO/BP-Li ***,the Li–S cell with GO/BP-Li exhibits enhanced cycling performance with a high capacity retention rate of 76.2%over 500 cycles at 1 C.