Surface-localized phase mediation accelerates quasi-solid-state reaction kinetics in sulfur batteries.

• Tác giả: Yifeng An, Yun An, Jianhao Chen, Chi Fang, Song Gao, Yizhou Hao, Mengxue He, Xufeng Hong, Yongfeng Jia, Yatao Liu, Yumei Liu, Yunfeng Lu, Quanquan Pang, Yaokun Ye, Jiaxin Zheng, Ruqiang Zou
• Ngôn ngữ: eng
• Ký hiệu phân loại: 331.89041 Labor unions, labor-management bargaining and disputes
• Thông tin xuất bản: England : Nature chemistry , 2025
• Bộ sưu tập: NCBI
• ID: 60068

Tóm tắt

Lithium-sulfur batteries promise high energy density storage but show poor stabilities owing to uncontrolled polysulfide dissolution. Although limiting polysulfide solvation to establish quasi-solid-state sulfur reaction can decouple electrode reactions from the electrolyte volume, this approach suffers from slow reaction kinetics. Here we propose a surface-localized polysulfide-solvation strategy to mediate the reaction of 'quasi-solid' polysulfide by leveraging an organic phase mediator with a weakly solvating electrolyte. This electrolyte restricts polysulfide dissolution globally while the phase mediator complexes with the surface polysulfide, promoting polysulfide solvation at the surface and facilitating fast surface-localized solution-phase sulfur reactions. Lithium-sulfur batteries using surface-localized phase mediation show excellent rate performance with 494 mA h g