Advanced inorganic/polymer hybrid electrolytes for all-solid-state lithium batteries

• Published in: Journal of advanced ceramics Vol. 11; no. 6; pp. 835 - 861
• Main Authors: Ji, Xiaoyu, Zhang, Yiruo, Cao, Mengxue, Gu, Quanchao, Wang, Honglei, Yu, Jinshan, Guo, Zi-Hao, Zhou, Xingui
• Format: Journal Article
• Language: English
• Published: Beijing Tsinghua University Press 01.06.2022; Springer; Springer Nature B.V
• Subjects: Architectural design; Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Composites; Dimensional tolerances; Electric properties; Electrochemical analysis; Electrochemistry; Electrolytes; Energy storage; Glass; Interface stability; Ion currents; Ion migration; Ion transport; Lithium; Lithium batteries; Lithium cells; Materials Science; Molten salt electrolytes; Nanotechnology; Natural Materials; Polyelectrolytes; Polymers; Review; Solid electrolytes; Solid state; Storage systems; Structural Materials; Wetting; electrical energy storage (EES); solid-state electrolytes (SSEs); hybrid electrolytes; energy density; lithium batteries
• ISSN: 2226-4108; 2227-8508
• DOI: 10.1007/s40145-022-0580-8

Solid-state batteries have become a frontrunner in humankind’s pursuit of safe and stable energy storage systems with high energy and power density. Electrolyte materials, currently, seem to be the Achilles’ heel of solid-state batteries due to the slow kinetics and poor interfacial wetting. Combining the merits of solid inorganic electrolytes (SIEs) and solid polymer electrolytes (SPEs), inorganic/polymer hybrid electrolytes (IPHEs) integrate improved ionic conductivity, great interfacial compatibility, wide electrochemical stability window, and high mechanical toughness and flexibility in one material, having become a sought-after pathway to high-performance all-solid-state lithium batteries. Herein, we present a comprehensive overview of recent progress in IPHEs, including the awareness of ion migration fundamentals, advanced architectural design for better electrochemical performance, and a perspective on unconquered challenges and potential research directions. This review is expected to provide a guidance for designing IPHEs for next-generation lithium batteries, with special emphasis on developing high-voltage-tolerance polymer electrolytes to enable higher energy density and three-dimensional (3D) continuous ion transport highways to achieve faster charging and discharging.