Abstract
Requirements of safety and reliability in batteries, power devices, and sensors have been increasing more and more in recent years, and one considers that safer and higher performance novel electrolyte materials should be developed in various fields. Liquid electrolytes have been widely used as ion-conducing electrolyte materials, but now gel electrolytes and solid polymer electrolytes have been currently developed to solve safety problems such as liquid leakage, evaporation of solvents, combustion, and so on. In this review article, we describe about (i) development of networked polymer solid electrolytes, (ii)development of ionic liquid gel electrolytes based on networked polymers with ionic liquids, and (iii) development of gel electrolytes for lithium-ion batteries by using networked polymers with carbonate-based liquid electrolytes, which we have recently developed.