Ionic liquid-based eutectic electrolyte and its application in aqueous zinc-iodine battery
By introducing a 1-ethyl-3-methylimidazolium chloride-sulfonic acid pyrrolidone copolymer eutectic electrolyte into an aqueous zinc-iodine battery, the problem of disordered zinc dendrite growth was solved by optimizing ion transport and electrode interface, thus achieving high specific capacity and stable battery performance over long cycles.
CN122118133BActive Publication Date: 2026-07-21ANHUI UNIV
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ANHUI UNIV
- Filing Date
- 2026-04-29
- Publication Date
- 2026-07-21
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Figure CN122118133B_ABST
Abstract
The application discloses a eutectic electrolyte based on ionic liquid and application thereof in water-based zinc-iodine batteries, and belongs to the technical field of eutectic electrolytes. First, a sulfonic acid pyrrolidone copolymer is prepared by radical polymerization with 2-acrylamido-2-methylpropanesulfonic acid and N-vinylpyrrolidone as monomers. Then, a stable eutectic liquid phase system is constructed by regulating the amount of deionized water with zinc sulfate heptahydrate as a zinc salt and 1-ethyl-3-methylimidazolium chloride as a core functional component. Subsequently, the sulfonic acid pyrrolidone copolymer is introduced to prepare a eutectic electrolyte based on ionic liquid. When the electrolyte is used for assembling water-based zinc-iodine batteries, a four-electron transfer reaction based on iodine can be stably realized, iodide migration and zinc dendrite disorder growth can be effectively inhibited, and the water-based zinc-iodine batteries have long-term cycle stability.
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