Issue 12, 2025
From the journal:

Energy Advances

Low-melting, ether-functionalised lithium salts for enhanced ion transport in molten salt electrolytes

Yuna Matsuyama, ORCID logo a   Frederik Philippi, ORCID logo b   Taku Sudoh, ORCID logo a   David Pugh, ORCID logo c   Saki Sawayama, ORCID logo d   Kenta Fujii, ORCID logo d   Seiji Tsuzuki,e   Md. Sharif Hossain*af  and  Kazuhide Ueno ORCID logo *ae  

* Corresponding authors

a Department of Chemistry and Life Science, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa, Japan
E-mail: shafisust2012@gmail.com, ueno-kazuhide-rc@ynu.ac.jp

b Laboratoire de Chimie ENS de Lyon, Campus Monod Room M6.056, 46 Allée d’Italie, 69364 Lyon Cedex 07, France

c Department of Chemistry, King's College London, Britannia House, 7 Trinity Street, London SE1 1DB, UK

d Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan

e Institute of Advanced Science, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa, Japan

f Chemical Engineering Department, Kanagawa Institiute of Industrial Science and Technology, 705-1 Shimoimaizumi, Ebina, Kanagawa, Japan

Abstract

We report ether-functionalised lithium salts as molten salt electrolytes for Li-ion batteries. Flexible ether chains in asymmetric anions suppress crystallinity and promote nano-segregation, lowering melting points below 100 °C. In the molten state, they deliver high ionic conductivity and near-unity Li+ transference numbers, establishing a molecular design principle for high-performance, solvent-free electrolytes for next-generation energy storage.

Graphical abstract: Low-melting, ether-functionalised lithium salts for enhanced ion transport in molten salt electrolytes

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Article information

DOI
https://doi.org/10.1039/D5YA00246J
Article type
Communication
Submitted
27 Aug 2025
Accepted
31 Oct 2025
First published
10 Nov 2025
This article is Open Access
Creative Commons BY-NC license

Energy Adv., 2025,4, 1438-1442

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Low-melting, ether-functionalised lithium salts for enhanced ion transport in molten salt electrolytes

Y. Matsuyama, F. Philippi, T. Sudoh, D. Pugh, S. Sawayama, K. Fujii, S. Tsuzuki, Md. S. Hossain and K. Ueno, Energy Adv., 2025, 4, 1438 DOI: 10.1039/D5YA00246J

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