Issue

Vol. 18 (2026)

Wide-Temperature Electrolytes for Aqueous Alkali Metal-Ion Batteries: Challenges, Progress, and Prospects

https://doi.org/10.1007/s40820-025-01865-3
Zichen Lin
School of Metallurgy and Energy, State Key Laboratory of Advanced Refractories, Wuhan University of Science and Technology, Wuhan 430081, People’s Republic of China
Yongzhou Cai
School of Metallurgy and Energy, State Key Laboratory of Advanced Refractories, Wuhan University of Science and Technology, Wuhan 430081, People’s Republic of China
Shilin Zhang
School of Chemical Engineering, The University of Adelaide, Adelaide 5000, Australia
Jianguo Sun
Department of Materials Science and Engineering, National University of Singapore, Singapore 117574, Singapore
Yu Liu
School of Metallurgy and Energy, State Key Laboratory of Advanced Refractories, Wuhan University of Science and Technology, Wuhan 430081, People’s Republic of China
Yang Zheng
School of Metallurgy and Energy, State Key Laboratory of Advanced Refractories, Wuhan University of Science and Technology, Wuhan 430081, People’s Republic of China
Kaifu Huo
School of Metallurgy and Energy, State Key Laboratory of Advanced Refractories, Wuhan University of Science and Technology, Wuhan 430081, People’s Republic of China

Corresponding Author: Kaifu Huo

kfhuo@hust.edu.cn

Nano-Micro Letters, Vol. 18 (2026), Article Number: 27

Abstract

Aqueous alkali metal-ion batteries (AAMIBs) have been recognized as emerging electrochemical energy storage technologies for grid-scale applications owning to their intrinsic safety, cost-effectiveness, and environmental sustainability. However, the practical application of AAMIBs is still severely constrained by the tendency of aqueous electrolytes to freeze at low temperatures and decompose at high temperatures, limiting their operational temperature range. Considering the urgent need for energy systems with higher adaptability and resilience at various application scenarios, designing novel electrolytes via structure modulation has increasingly emerged as a feasible and economical strategy for the performance optimization of wide-temperature AAMIBs. In this review, the latest advancement of wide-temperature electrolytes for AAMIBs is systematically and comprehensively summarized. Specifically, the key challenges, failure mechanisms, correlations between hydrogen bond behaviors and physicochemical properties, and thermodynamic and kinetic interpretations in aqueous electrolytes are discussed firstly. Additionally, we offer forward-looking insights and innovative design principles for developing aqueous electrolytes capable of operating across a broad temperature range. This review is expected to provide some guidance and reference for the rational design and regulation of wide-temperature electrolytes for AAMIBs and promote their future development.


Highlights:
1 The key challenges and fundamental principles of wide-temperature aqueous electrolytes for alkali metal ion batteries were analyzed.
2 The design strategies for aqueous electrolytes with broad operating temperature ranges were summarized. The future research directions for high-performance wide-temperature aqueous alkali metal ion batteries were proposed.

Keywords

Aqueous alkali metal-ion batteries Wide-temperature electrolyte Electrolyte regulation Hydrogen bond networks
Lin, Zichen, Yongzhou Cai, Shilin Zhang, Jianguo Sun, Yu Liu, Yang Zheng, and Kaifu Huo. 2025. “Wide-Temperature Electrolytes for Aqueous Alkali Metal-Ion Batteries: Challenges, Progress, and Prospects”. Nano-Micro Letters 18 (August):27. https://doi.org/10.1007/s40820-025-01865-3.
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