High-concentration Electrolytes for Rechargeable Batteries

Abstract

The rapid increase in energy demand has stimulated the development of energy storage devices with high energy density. A variety of rechargeable batteries shine in different energy storage fields due to their unique characteristics. However, traditional electrolytes have disadvantages such as low safety, poor cycle stability, unfriendly environments, and high cost. Although aqueous electrolyte can solve some of these problems, its narrow electrochemical window severely limits its development and application. Due to its unique solvation structure, high-concentration electrolyte exhibits excellent performance in rechargeable batteries. The stable electrode–electrolyte interface, wide electrochemical window, high thermal stability, low volatility, and good flame retardancy provide a new direction for the development of next-generation batteries. In Chapter 10 we outline the application and development of high-concentration electrolytes and local high-concentration electrolytes in different rechargeable batteries, and look forward to the challenges and prospects of organic and aqueous high-concentration electrolytes.