Issue 7, 2022

Interface modification of NASICON-type Li-ion conducting ceramic electrolytes: a critical evaluation

Abstract

This review article focuses on the methods to solve the critical issue of reduction in NASICON-type solid electrolytes such as Li1+xAlxTi2−x(PO4)3 and Li1+xAlxGe2−x(PO4)3 by Li metal. The formation of a reduced phase on the surface of solid electrolytes degrades ionic conductivity. Numerous research efforts were devoted to resolve this issue by depositing various types of artificial protecting layers on the materials’ surface. Inorganics such as lithium salts, oxides, and composites, solid polymer electrolytes, as well as hybrid composite membranes have been applied to protect the material from the side reaction by lithium metal. Besides prevention, these layers improved the interface between solid electrolyte and electrode. Particularly, a coating with a polymer layer prevented the lithium dendrite growth by evenly distributing lithium. The assessments of these layers and their effect on the performance of solid electrolytes are discussed to establish a pathway for further improvement of solid-state electrolytes and encourage their implementation in all-solid-state Li metal batteries. Through this critical evaluation, the present review provides a summary of the most recent works in this area, allowing more efficient and target-oriented research on improving solid-state ion conductors and their interfaces.

Graphical abstract: Interface modification of NASICON-type Li-ion conducting ceramic electrolytes: a critical evaluation

Article information

Article type
Review Article
Submitted
24 дек 2021
Accepted
20 фев 2022
First published
22 фев 2022
This article is Open Access
Creative Commons BY license

Mater. Adv., 2022,3, 3055-3069

Interface modification of NASICON-type Li-ion conducting ceramic electrolytes: a critical evaluation

N. Tolganbek, A. Serikkazyyeva, S. Kalybekkyzy, M. Sarsembina, K. Kanamura, Z. Bakenov and A. Mentbayeva, Mater. Adv., 2022, 3, 3055 DOI: 10.1039/D1MA01239H

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