Thermally, Electrochemically, and Mechanically Tough Polymer Electrolytes Containing a Solvate Ionic Liquid for Lithium Secondary Battery

摘要

Lithium-ion rechargeable batteries (LIB) are energy storage devices with extremely high energy density, which play an essential role in portable electronic devices as well as electric vehicles. Conventional LIBs are composed of Li-intercalated cathode materials, graphite anode, and liquid electrolytes prepared by dissolving Li salts into organic solvents. Recently, a gel electrolyte, i.e., a three-dimensional polymer network swollen by a liquid electrolyte, is commercially used to bestow flexibility in the battery design, which contributes to the development of thin electronic devices. However, these gel materials are volatile, and their mechanical reliabilities are low.