二次电池用局部高浓度电解质的研究进展与展望  

Research Progress and Perspectives of Localized High-concentration Electrolytes for Secondary Batteries

作　　者：于喆 张建军[1] 刘亭亭 唐犇 杨晓燕[2] 周新红[2] 崔光磊[1] Yu Zhe;Zhang Jianjun;Liu Tingting;Tang Ben;Yang Xiaoyan;Zhou Xinhong;Cui Guanglei(Qingdao Institute of Bioenergy and Bioprocess Technology,Chinese Academy of Sciences,Qingdao Industrial Energy Storage Technology Institute,Qingdao 266101,China;College of Chemistry and Molecular Engineering,Qingdao University of Science&Technology,Qingdao 266042,China)

机构地区：[1]中国科学院青岛生物能源与过程研究所青岛市储能产业技术研究院,青岛266101 [2]青岛科技大学化学与分子工程学院,青岛266042

出　　处：《化学学报》2020年第2期114-124,共11页Acta Chimica Sinica

基　　金：国家自然科学基金(Nos.51703236,51625204)资助.

摘　　要：电解质作为二次电池离子传导的重要介质,对于提升二次电池循环稳定性能、安全性能等方面起着至关重要的作用.局部高浓度电解质是指在高浓度电解质中加入"稀释剂",形成盐的局部高浓度状态,既能兼具高浓度电解质的优异特性,又具有低成本和优良润湿性的特点,应用前景非常广阔.近几年,局部高浓度电解质在阻燃锂金属电池、高电压锂电池、低温锂电池、锂硫电池和钠电池等多方面应用广泛,且展现出非常好的使用效果.本综述重点从局部高浓度电解质的功能性应用角度出发,详细阐述了局部高浓度电解质的类型、制备、作用机理及其在不同二次电池中的功能性应用进展和主要研究现状,文末还对局部高浓度电解质的未来可能发展趋势进行了分析与展望.The electrolyte, which is an important medium of ion conduction for secondary batteries, plays a crucial role in improving the cycling performance and safety performance of secondary batteries. Localized high-concentration electrolytes, which are formed by adding "diluent" into high-concentration electrolyte, not only reserve the outstanding properties of high-concentration electrolytes but also possess low viscosity, excellent wettability and low cost, promising broad application prospect. Localized high-concentration electrolytes have already played a part in flame-retardant lithium battery, high-voltage lithium battery, low-temperature lithium battery, lithium sulfur battery and sodium battery. Herein, this paper mainly reviews the types and preparation of localized high-concentration electrolytes and their functional mechanism and research status in various secondary batteries. We discuss the challenges and future development of localized high-concentration electrolytes and have the outlook at the end of the paper.

关 键 词：局部高浓度电解质 二次电池 功能性应用 

分 类 号：TM912[电气工程—电力电子与电力传动]