Zeolite-Based Electrolytes: A Promising Choice for Solid-State Batteries

Abstract

The large-scale application of intermittent renewable energy has boosted the prosperous development of secondary batteries for the past several decades. In comparison with batteries based on liquid electrolytes, solid-state batteries are regarded as the goal for future energy storage due to their superior safety, nonvolatilization, excellent mechanical strength, and high energy density. While conventional solid electrolytes (SEs) struggle with their intrinsic limitations, zeolites are emerging as a promising choice for the future SEs of solid-state batteries. Herein, first, we analyze the challenges faced by conventional SEs to highlight the significance of leveraging zeolite-based SEs in secondary batteries. Then, we discuss the application of zeolites in liquid and solid electrolytes and showcase the functions of zeolites contributing to the enhanced wettability, thermal stability, mechanical strength, electrochemical stability, and ionic conductivity of separators and/or SEs. Finally, we provide a perspective on the development directions for zeolite-based SEs toward the design of materials, extension of battery systems, investigation of the conductive mechanism, and their practical applications.