Methanesulfonate in Phosphate Electrolyte Superstructure Enables Ampere-Hour Practical Aqueous Batteries.

ABSTRACT: Present high-voltage Li-ion aqueous batteries largely rely on highly concentrated (up to 63 m) "water-in-salt" electrolyte with limited cycle life (<1,000 cycles) and little hope in practical application. To date, no dilute aqueous electrolyte (salt molality < 2 m) can reliably operate beyond 2 V with cycling life over 1,000 cycles. Here, we introduce a "methanesulfonate in phosphate" superstructure that simultaneously tailors Li⁺ migration in molecular crowding solvent and electrode surfaces, which enables an unprecedented electrochemical stability window (up to 4.5 V) and cyclability (up to 10,000 cycles) in a dilute 1.1-m aqueous electrolyte. In addition, Such methanesulfonate in phosphate electrolyte can be also applied in various high-voltage electrode

SUBMITTER: Zhi J 

PROVIDER: S-EPMC12932869 | biostudies-literature | 2026

REPOSITORIES: biostudies-literature