With the development of battery technology, the application of batteries in cold regions has become a major challenge. Much research has been devoted to improving the low-temperature performance of both aqueous and non-aqueous batteries. Among them, aqueous batteries usually exhibit better multiplier performance than non-aqueous batteries, especially at low temperatures, which indicates their potential application in cold regions. Currently, the main challenges of low-temperature aqueous batteries are 1) electrolyte freezing at low temperatures, 2) slow ion diffusion, and 3) slow interfacial redox kinetics. This is closely related to the physicochemical properties of aqueous electrolytes.

In view of this, Prof. Yijun Lu et al. of the Chinese University of Hong Kong coincidentally used the characteristics of equilibrium and nonequilibrium phase diagrams to analyze the antifreezing mechanism of low-temperature aqueous electrolytes and propose design strategies; reviewed the temperature/concentration/charge carrier-related conductivity characteristics in aqueous electrolytes to understand and regulate the ion diffusion kinetics; presented the interfacial studies of aqueous and non-aqueous cells and proposed a potential improvement strategy for the interfacial oxidation Potential improvement strategies for the interfacial oxidation kinetics of low-temperature aqueous batteries are presented, and design strategies for the development of high-performance aqueous battery electrolytes are summarized. The work was published as "Design strategies for low temperature aqueous electrolytes" in Nano Research Energy, a journal sponsored by Tsinghua University, which is one of the "new journals with high starting point" in the 2022 China Science and Technology Journal Excellence Action Plan. Research Energy.

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