Issue 86, 2022

Solid electrolytes for solid-state Li/Na–metal batteries: inorganic, composite and polymeric materials

Abstract

The thrust towards a higher energy density and safer alternative to traditional-liquid-electrolyte-based batteries has driven academic and industrial efforts in developing solid-state batteries and particularly solid-state Li/Na–metal batteries (SSLMBs/SSNMBs). Despite research on solid electrolytes seemingly being on a perpetual trajectory, there have been considerable critical issues to be overcome for solid electrolytes, including the insufficient ionic conductivity, low ion-transference number, and poor compatibility with lithium–metal anodes and intercalation cathodes. This feature article sets out efforts to regulate the cubic structure of garnet-type electrolytes, along with a discussion of the solid-solution synthetic approach to produce garnet-type and NASICON (sodium super ion conductor)-type electrolytes, followed by the synthetic strategy for sintering dense nano-grained NASICON-type electrolytes. Next, the mechanochemical synthetic approach and hybrid electrolyte design strategy to mitigate the issues associated with PEO-based composite electrolytes are presented. Finally, the advancement of promising polymeric electrolytes is discussed. We end the perspective with an opinion on the future research in this area.

Graphical abstract: Solid electrolytes for solid-state Li/Na–metal batteries: inorganic, composite and polymeric materials

Article information

Article type
Feature Article
Submitted
02 sep. 2022
Accepted
03 oct. 2022
First published
04 oct. 2022

Chem. Commun., 2022,58, 12035-12045

Solid electrolytes for solid-state Li/Na–metal batteries: inorganic, composite and polymeric materials

S. Song, N. Hu and L. Lu, Chem. Commun., 2022, 58, 12035 DOI: 10.1039/D2CC04862K

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