In situ protection of a sulfur cathode and a lithium anode via adopting a fluorinated electrolyte for stable lithium-sulfur batteries

作     者：Xue Chen Haijin Ji Weilun Chen Jingyi Wu Fei Hu Lixia Yuan Zhen Li Yunhui Huang 陈雪;纪海锦;陈伟伦;吴敬一;胡飞;袁利霞;李真;黄云辉

作者机构：State Key Laboratory of Material Processing and Die and Mold TechnologySchool of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China 

基　　金：financially supported by the National Key R&D Program of China (2018YFB0905400) the National Natural Science Foundation of China (51972131 and 51632001) 

出 版 物：《Science China Materials》 (中国科学（材料科学（英文版）)

年 卷 期：2021年第64卷第9期

页      码：2127-2138页

摘      要：Lithium-sulfur(Li-S)batteries are regarded as one of the most promising next-generation energy storage systems due to their high theoretical energy density and low material ***,the conventional ether-based electrolytes of Li-S batteries are extremely flammable and have high solubility of lithium polysulfides(LiPS),resulting in a high safety risk and a poor life ***,we report an ether/carbonate co-solvent fluorinated electrolyte with a special solvation sheath of Li^(+),which can prevent the formation of dissoluble long-chain LiPS of the sulfur cathode,restrict Li dendrite growth at the anode side,and show fire resistance in combustion *** a result,the proposed Li-S batteries with 70 wt%sulfur content in its cathode deliver stable life cycle,low self-discharge ratio,and intrinsic ***,the unique passivation characteristics of the designed fluorinated electrolyte break several critical limitations of the traditional“liquid phase”-based Li-S batteries,offering a facile and promising way to develop long-life and high-safety Li-S batteries.

主 题 词：Li-S batteries multifunctional electrolyte solidphase sulfur conversion Li metal anode 

学科分类：0808[工学-自动化类] 081704[081704] 08[工学] 0817[工学-轻工类] 0805[工学-能源动力学] 

核心收录：

D　O　I：10.1007/s40843-020-1621-8

馆 藏 号：203102866...