文献类型：期刊文献

英文题名：Relay Storage of Protons and Zinc Ions Enables Practical High-Mass-Loading Organic Electrodes

作者：Yu, Xiaomeng[1,2];Yuan, Shouyi[1,2];Yan, Lei[1,2,3];Kong, Taoyi[1,2];Zhou, Kang[1,2];Qi, Yae[1,2];Zhu, Qiang[4];Li, Zhi[1,2];Wang, Penglin[5];Gu, Shuai[5];Ma, Jing[4];Wang, Yonggang[1,2]

机构：[1]Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China;[2]Fudan Univ, Inst New Energy, iChEM Collaborat Innovat Ctr Chem Energy Mat, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai, Peoples R China;[3]Ningbo Univ, Sch Mat Sci & Chem Engn, Ningbo, Zhejiang, Peoples R China;[4]Nanjing Univ, Sch Chem & Chem Engn, Key Lab Mesoscop Chem MOE, Nanjing, Jiangsu, Peoples R China;[5]East China Univ Sci & Technol, Natl Engn Res Ctr Integrated Utilizat Salt Lake Re, Engn Res Ctr Salt Lake Resources Proc Engn, Minist Educ, Shanghai, Peoples R China

年份：2026

卷号：65

期号：13

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20260720070596);WOS:【SCI-EXPANDED(收录号:WOS:001687425100001)】；

基金：This work was financially supported by National Natural Science Foundation of China (22225201, 22209082), National Key Research and Development Program of China (2022YFB2402201), the Shanghai Pilot Program for Basic Research-Fudan University 21TQ1400100 (21TQ009), and Natural Science Foundation of Zhejiang Province (LY23B030005).

语种：英文

外文关键词：electrochemistry; electrolytes; energy storage; organic electrode; zinc batteries

摘要：Rechargeable Zn-organic batteries hold great promise for sustainable energy storage, yet most reported high performances are achieved only at low mass loadings (2-3 mg cm-2), far from practical application. Here, we investigate poly(benzoquinonyl sulfide) (PBQS) electrodes working in a water-in-salt electrolyte and reveal that PBQS first undergoes faradaic proton insertion during discharge, which is subsequently displaced by Zn2+, releasing protons back into the electrolyte. This dynamic relay allows a small amount of H+ to cycle repeatedly, acting as a kinetic buffer that offset the sluggish diffusion of Zn2+. Owing to this mechanism and PBQS's high conductivity, a low-carbon (10 wt.%) PBQS electrode with an ultrahigh mass loading of 100 mg cm-2 delivers a capacity of 187.1 mAh g-1 (similar to 96% of low-loading capacity) and achieves a record areal capacity of 18 mAh cm-2. The electrode also exhibits excellent rate capability and cycling stability, suggesting its strong potential for practical applications.