Hybrid Polymer-Garnet Materials for All-Solid-State Energy Storage Devices

TL;DR

This review discusses hybrid polymer-garnet materials as promising electrolytes for all-solid-state batteries, highlighting their customizable properties and potential to overcome current limitations in solid-state energy storage.

Contribution

It provides a comprehensive survey of solid-state electrolytes and insights into transport mechanisms in composite polymer electrolytes to guide future research.

Findings

Hybrid polymer-garnet electrolytes improve safety and performance.

Transport mechanisms in composite electrolytes are better understood.

Tailorable properties enable optimization for specific battery applications.

Abstract

Hybrid electrolyte materials comprising polymer-ionic salt matrixes embedded with garnet particles constitute a promising class of materials for the realization of all-solid-state batteries. In addition to providing solutions to the safety issues inherent to current liquid electrolytes, hybrid polymer electrolytes offer advantages over other solid-state electrolytes. This is because their functional properties such as ionic conductivity, electrochemical stability, mechanical and thermal properties can be tailored to a particular application by independently optimizing the properties of the constituent materials. Thereby, providing a rational approach to solving bottlenecks currently preventing solid-state electrolytes from practical implementation into battery devices. This review starts with a survey of solid-state electrolytes, focusing on their materials and ion transport limitations. Next, we summarize the current understanding of transport mechanisms in composite polymer electrolytes (CPEs) with the purpose of identifying materials solutions for further improving their properties. The overall goal of the review is to foster heightened research interest in these hybrid structures to rapidly advance development of future all-solid-state battery devices.