Covalent Organic Frameworks Coupled with Redox Center and Adsorption Site for Efficient Shuttle‐Free Zn‐Iodine Batteries

IF 16.1 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Angewandte Chemie International Edition Pub Date : 2025-05-29 DOI:10.1002/anie.202506006

Jing-Dong Feng, Wang-Kang Han, Jun-Jun He, Yong Liu, Ruo-Meng Zhu, Jinfang Zhang, Huan Pang, Zhi-Guo Gu

{"title":"Covalent Organic Frameworks Coupled with Redox Center and Adsorption Site for Efficient Shuttle‐Free Zn‐Iodine Batteries","authors":"Jing-Dong Feng, Wang-Kang Han, Jun-Jun He, Yong Liu, Ruo-Meng Zhu, Jinfang Zhang, Huan Pang, Zhi-Guo Gu","doi":"10.1002/anie.202506006","DOIUrl":null,"url":null,"abstract":"Aqueous zinc‐iodine (Zn‐I2) batteries exhibit significant potential for next‐generation energy storage system, but the polyiodide shuttle effect severely impairs their performance and stability. Herein, a series of woven covalent organic frameworks (COFs), namely COF‐RuNCS‐X (X = 1‐6), with pre‐designed ruthenium(II) redox center and sulfur adsorption sites were constructed for shuttle‐free cathode material in Zn‐I2 batteries. The porous COF‐RuNCS‐X with abundant sulfur adsorption sites showed a selective adsorption of I3− species for effectively mitigating the shuttle effect. Meanwhile, the incorporation of ruthenium(II) center into the COFs skeleton enhanced the redox kinetics of iodine species. Remarkably, COF‐RuNCS‐6 featuring the large pore size and high degree of conjugation demonstrated a discharge specific capacity as high as 395.8 m Ah g‐1 in Zn‐I2 batteries and exhibited cycle stability up to 5000 cycles. This work provides a new understanding of the design of COF‐based materials as efficient shuttle‐free cathode materials for Zn‐I2 batteries.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"57 1","pages":""},"PeriodicalIF":16.1000,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Angewandte Chemie International Edition","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1002/anie.202506006","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Aqueous zinc‐iodine (Zn‐I2) batteries exhibit significant potential for next‐generation energy storage system, but the polyiodide shuttle effect severely impairs their performance and stability. Herein, a series of woven covalent organic frameworks (COFs), namely COF‐RuNCS‐X (X = 1‐6), with pre‐designed ruthenium(II) redox center and sulfur adsorption sites were constructed for shuttle‐free cathode material in Zn‐I2 batteries. The porous COF‐RuNCS‐X with abundant sulfur adsorption sites showed a selective adsorption of I3− species for effectively mitigating the shuttle effect. Meanwhile, the incorporation of ruthenium(II) center into the COFs skeleton enhanced the redox kinetics of iodine species. Remarkably, COF‐RuNCS‐6 featuring the large pore size and high degree of conjugation demonstrated a discharge specific capacity as high as 395.8 m Ah g‐1 in Zn‐I2 batteries and exhibited cycle stability up to 5000 cycles. This work provides a new understanding of the design of COF‐based materials as efficient shuttle‐free cathode materials for Zn‐I2 batteries.

查看原文本刊更多论文

含氧化还原中心和吸附位点的共价有机骨架高效无梭锌碘电池

锌-碘（Zn - I2）水电池在下一代储能系统中表现出巨大的潜力，但多碘离子穿梭效应严重损害了其性能和稳定性。本文构建了一系列编织共价有机框架（COFs），即COF‐RuNCS‐X (X = 1‐6)，具有预先设计的钌（II）氧化还原中心和硫吸附位点，用于Zn‐I2电池的无梭正极材料。多孔COF - RuNCS - X具有丰富的硫吸附位点，可选择性吸附I3−，有效减轻穿梭效应。同时，钌（II）中心在COFs骨架中的掺入增强了碘的氧化还原动力学。值得注意的是，具有大孔径和高共轭度的COF‐RuNCS‐6在Zn‐I2电池中显示出高达395.8 m Ah g‐1的放电比容量，并表现出高达5000次循环的循环稳定性。这项工作为设计高效的无穿梭锌离子电池正极材料提供了新的认识。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Angewandte Chemie International Edition 化学-化学综合

CiteScore

26.60

自引率

6.60%

发文量

3549

审稿时长

1.5 months

期刊介绍： Angewandte Chemie, a journal of the German Chemical Society (GDCh), maintains a leading position among scholarly journals in general chemistry with an impressive Impact Factor of 16.6 (2022 Journal Citation Reports, Clarivate, 2023). Published weekly in a reader-friendly format, it features new articles almost every day. Established in 1887, Angewandte Chemie is a prominent chemistry journal, offering a dynamic blend of Review-type articles, Highlights, Communications, and Research Articles on a weekly basis, making it unique in the field.