文献类型：期刊文献

英文题名：Electrolyte Engineering via Fluorinated Siloxane Solvent for Achieving High-Performance Lithium-Metal Batteries

作者：Huang, Gaoxu[1];Liao, Yaqi[2];Liu, Honghao[1];Jin, Xiaopan[1];Guan, Mengjia[1];Yu, Feng[3];Dai, Bin[3];Li, Yongsheng[1,3]

机构：[1]East China Univ Sci & Technol, Frontier Sci Ctr Mat Biol & Dynam Chem, Shanghai Engn Res Ctr Hierarch Nanomat,Key Lab Ult, Sch Mat Sci & Engn,Lab Low Dimens Mat Chem, Shanghai 200237, Peoples R China;[2]Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mold Technol, Wuhan 430074, Peoples R China;[3]Shihezi Univ, Sch Chem & Chem Engn, Key Lab Green Proc Chem Engn Xinjiang Bingtuan, Shihezi 832003, Xinjiang, Peoples R China

年份：2024

卷号：18

期号：24

起止页码：15802

外文期刊名：ACS NANO

收录：;EI(收录号：20242316220997);WOS:【SCI-EXPANDED(收录号:WOS:001239417600001)】；

基金：The authors acknowledge the financial supports from the National Natural Science Foundation of China (nos. 51972112), the Leading Talents in Shanghai in 2018 and the 111 project (B14018), and Shanghai Pilot Program for Basic Research (22TQ1400100-13).

语种：英文

外文关键词：electrolyte; fluorinated siloxane; solvationstructure; kinetics reaction; lithium-metal anode

摘要：Advanced solvent is of important significance to develop an excellent electrolyte that simultaneously maintains a high ionic conductivity, wide electrochemical window, and good compatibility with electrodes for high-performance lithium-metal batteries (LMBs). To realize a stable electrode/electrolyte interface and a uniform lithium (Li) deposition process, an optimal fluorinated siloxane (3,3,3-trifluoropropyltrimethoxysilane, TFTMS) is proposed as a cosolvent with 1,2-dimethoxyethane (DME) and highly antioxidative fluoroethylene carbonate (FEC) to formulate a Li-metal compatibility electrolyte. The TFTMS-based electrolyte presents high oxidization stability, high Li+ conductivity, and high Li+ transfer number, contributing to the accelerated reaction kinetics, homogeneous Li deposition behavior, and stable interfacial chemistry. Therefore, high Li stripping/plating reversibility (similar to 99%) and stable cycling (1400 h) are achieved in the TFTMS-based electrolyte, giving rise to the excellent electrochemical performance of practical Li-metal full cells. Moreover, an industrial 4 Ah NCM811|Gr pouch cell with the TFTMS-based electrolyte is demonstrated to display similar cycling performance with the commercial carbonate electrolyte in 120 cycles at 1 C. This work offers an approach toward high-performance LMBs through rational electrolyte design with fluorinated siloxane solvent.