Lithium‐Ion Conduction Through Frozen Phase of Organic Electrolytes for Lithium Batteries

Advanced Materials 2026

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Authors: Do Sol Cheong, Minjun Kwon, Pil‐Su Jung, Seongmin Yoo, Jinki Hong, Eun Seon Heo, Jeongin Lee, Yewon Choi, You‐Yeob Song, DH Seo, Hyun‐Kon Song
DOI: 10.1002/adma.202512268
Cited by: 5
References: 47

Abstract

ABSTRACT Organic ice electrolytes in their frozen states are presented as molecular‐solid Li + conductors for lithium metal batteries (LMBs), challenging the notion that frozen electrolytes lack ionic conductivity. Ethylene carbonate, a cyclic carbonate, was predicted to form Li + ‐conductive channels in its frozen crystal structure. A room‐temperature ice‐phase electrolyte, EC 0.2T (0.2 m LiTFSI in ethylene carbonate), exhibited a high ionic conductivity (∼0.64 mS cm − 1 ) and a high Li + transference number (∼0.8) via hopping mechanism through solid matrix formed by immobilized solvent molecules. Frozen EC 0.2T delivered liquid‐electrolyte‐level capacity in LFP||Li cells and, more importantly, significantly extended cycle life with a solvent‐derived, Li 2 O‐rich solid electrolyte interphase.

Fields of Study & Subjects

Advanced Battery Materials and Technologies Advancements in Battery Materials Coordination Chemistry and Organometallics

Publication details

Journal / source
Advanced Materials
Publisher
Wiley
Volume
38
Issue
12
Pages
e12268–e12268
Publication date
21 January 2026
Language
EN