摘要/Abstract

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.
关键词: 局部高浓度电解质, 二次电池, 功能性应用
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.
Key words: localized high-concentration electrolyte, secondary battery, functional application


PDF全文下载地址:

点我下载PDF