Zwitterionic Hydrogel Electrolyte with Dual Cross-Linking Strategy for Stable and Robust Zinc-Ion Batteries
발표자
이지섭 (경북대학교)
연구책임자
유지영 (경북대학교 에너지공학과 교수)
공동저자
이지섭 (경북대학교), 유지영 (경북대학교 에너지공학과 교수)
초록
내용
Zwitterionic polymers have recently gained attention as functional electrolyte materials due to their strong hydration ability, which can effectively regulate water activity and suppress undesired side reactions. Herein, we report a zwitterionic hydrogel electrolyte based on 3-(dimethyl(2-methacryloyloxyethyl) ammonium) propane sulfonate (DMAPS), designed to leverage the sulfonate groups that strongly bind free water molecules. This hydration effect significantly reduces the amount of free water in the electrolyte.A notable advantage of this design is the direct incorporation of zinc salts during the gelation process, eliminating the need for pre-swelling or salt-loading steps. The resulting zwitterionic hydrogel electrolyte demonstrates improved structural robustness, suppressed side reactions, and enhanced electrochemical performance, underscoring the critical role of zwitterionic functionality in advanced hydrogel electrolyte design for ZIBs. This research was supported by the National Research Foundation (NRF) funded by the Korean government (MSIT) (No. RS-2025-00562734). This research was supported by Basic Science Research Program through National Research Foundation of Korea funded by Ministry of Science and ICT of Korea (No. RS-2025-02217276).