文献类型：期刊文献

英文题名：Highly Adhesive Li-BN Nanosheet Composite Anode with Excellent Interfacial Compatibility for Solid-State Li Metal Batteries

作者：Wen, Jiayun[1];Huang, Ying[1];Duan, Jian[1];Wu, Yongmin[3];Luo, Wei[1];Zhou, Lihui[4];Hu, Chenchen[1];Huang, Liqiang[1];Zheng, Xueying[1];Yang, Wenjuan[1];Wen, Zhaoyin[2];Huang, Yunhui[1]

机构：[1]Tongji Univ, Sch Mat Sci & Engn, Inst New Energy Vehicles, Shanghai 201804, Peoples R China;[2]Chinese Acad Sci, CAS Key Lab Mat Energy Convers, Shanghai Inst Ceram, Shanghai 200050, Peoples R China;[3]Shanghai Inst Space Power Sources, State Key Lab Space Power Sources Technol, Shanghai 200245, Peoples R China;[4]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2019

卷号：13

期号：12

起止页码：14549

外文期刊名：ACS NANO

收录：;EI(收录号：20195107885687);WOS:【SCI-EXPANDED(收录号:WOS:000505633300092)】；

基金：The authors thank the financial support from National Key R&D Program of China (No. 2018YFB0905400), National Natural Science Foundation of China (Nos. 51802224 and 51632001), "Shanghai Rising-Star Program" (19QA1409300), and Shanghai Aerospace Science and Technology Innovation Fundation (SISP2018).

语种：英文

外文关键词：solid-state batteries; lithium metal anode; BN nanosheets; interface compatibility; adhesiveness

摘要：Solid-state lithium metal batteries (SSLMBs) are promising energy storage devices by employing lithium metal anodes and solid-state electrolytes (SSEs) to offer high energy density and high safety. However, their efficiency is limited by Li metal/SSE interface barriers, including insufficient contact area and chemical/electrochemical incompatibility. Herein, a strategy to effectively improve the adhesiveness of Li metal to garnet-type SSE is proposed by adding only a few two-dimensional boron nitride nanosheets (BNNS) (5 wt %) into Li metal by triggering the transition from point contact to complete adhesion between Li metal and ceramic SSE. The interface between the Li-BNNS composite anode and the garnet exhibits a low interfacial resistance of 9 Omega cm(2), which is significantly lower than that of bare Li/garnet interface (560 Omega cm(2)). Furthermore, the enhanced contact and the additional BNNS in the interface act synergistically to offer a high critical current density of 1.5 mA/cm(2) and a stable electrochemical plating/striping over 380 h. Moreover, the full cell paired with the Li-BNNS composite anode and the LiFePO4 cathode shows stable cycling performance at room temperature. Our results introduce an appealing composite strategy with two-dimensional materials to overcome the interface challenges, which provide more opportunities for the development of SSLMBs.