{"title":"源于共价有机框架的铁、氮共掺碳作为双功能电催化剂用于可充电高效锌-空气电池","authors":"Zhanpeng Chen, Jiabi Jiang, Mingjun Jing, Yansong Bai, Xiaoyan Zhang, Wenhui Deng, Yufeng Wu, Fang Chen, Mingguang Yi, Meixia Yang, Xinkai Xu, Tianjing Wu, Yang Zhang, Xianyou Wang","doi":"10.1002/cnl2.145","DOIUrl":null,"url":null,"abstract":"<p>The development of cathode materials with controllable physicochemical structures and explicit catalytic sites is important in rechargeable Zn–air batteries (ZABs). Covalent organic frameworks (COFs) have garnered increasing attention owing to their facile synthesis methods, ordered pore structure, and selectivity of functional groups. However, the sluggish kinetics of oxygen evolution reaction (OER) or oxygen reduction reaction (ORR) inhibit their practical applications in ZABs. Herein, nucleophilic substitution is adopted to synthesize pyridine bi-triazine covalent organic framework (denoted as O-COF), and meanwhile, ionothermal conversion synthesis is employed to load MO<sub>x</sub> (M=Fe, Co) onto carbon nanosheet (named as FeCo@NC) to modulate the electronic structure. The Fe, Co-N codoped carbon material possesses a large portion of pyridinic N and M-N, high graphitization, and a larger BET surface area. An outstanding bifunctional activity has been exhibited in FeCo@NC, which provides a small voltage at 10 mA cm<sup>−2</sup> for OER (E<sub>10</sub> = 1.67 V) and a remarkable half-wave voltage for ORR (E<sub>1/2</sub> = 0.86 V). More impressively, when assembling ZABs, it displays notable rate performance, significant specific capacity (783.9 mAh g<sub>Zn</sub><sup>−1</sup>), and satisfactory long-term endurance. This method of regulating covalent organic framework and ionothermal synthesis can be extended to design diverse catalysts.</p>","PeriodicalId":100214,"journal":{"name":"Carbon Neutralization","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cnl2.145","citationCount":"0","resultStr":"{\"title\":\"Covalent organic framework-derived Fe, Co-nitrogen codoped carbon as a bifunctional electrocatalyst for rechargeable efficient Zn–air batteries\",\"authors\":\"Zhanpeng Chen, Jiabi Jiang, Mingjun Jing, Yansong Bai, Xiaoyan Zhang, Wenhui Deng, Yufeng Wu, Fang Chen, Mingguang Yi, Meixia Yang, Xinkai Xu, Tianjing Wu, Yang Zhang, Xianyou Wang\",\"doi\":\"10.1002/cnl2.145\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The development of cathode materials with controllable physicochemical structures and explicit catalytic sites is important in rechargeable Zn–air batteries (ZABs). Covalent organic frameworks (COFs) have garnered increasing attention owing to their facile synthesis methods, ordered pore structure, and selectivity of functional groups. However, the sluggish kinetics of oxygen evolution reaction (OER) or oxygen reduction reaction (ORR) inhibit their practical applications in ZABs. Herein, nucleophilic substitution is adopted to synthesize pyridine bi-triazine covalent organic framework (denoted as O-COF), and meanwhile, ionothermal conversion synthesis is employed to load MO<sub>x</sub> (M=Fe, Co) onto carbon nanosheet (named as FeCo@NC) to modulate the electronic structure. The Fe, Co-N codoped carbon material possesses a large portion of pyridinic N and M-N, high graphitization, and a larger BET surface area. An outstanding bifunctional activity has been exhibited in FeCo@NC, which provides a small voltage at 10 mA cm<sup>−2</sup> for OER (E<sub>10</sub> = 1.67 V) and a remarkable half-wave voltage for ORR (E<sub>1/2</sub> = 0.86 V). More impressively, when assembling ZABs, it displays notable rate performance, significant specific capacity (783.9 mAh g<sub>Zn</sub><sup>−1</sup>), and satisfactory long-term endurance. This method of regulating covalent organic framework and ionothermal synthesis can be extended to design diverse catalysts.</p>\",\"PeriodicalId\":100214,\"journal\":{\"name\":\"Carbon Neutralization\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-05-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cnl2.145\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Carbon Neutralization\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/cnl2.145\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Carbon Neutralization","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/cnl2.145","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
开发具有可控物理化学结构和明确催化位点的阴极材料对于可充电锌-空气电池(ZABs)非常重要。共价有机框架(COFs)因其简便的合成方法、有序的孔结构和官能团的选择性而受到越来越多的关注。然而,氧进化反应(OER)或氧还原反应(ORR)的缓慢动力学抑制了它们在 ZAB 中的实际应用。本文采用亲核置换法合成吡啶双三嗪共价有机框架(简称 O-COF),同时采用离子热转化合成法在碳纳米片(简称 FeCo@NC)上负载 MOx(M=Fe、Co)以调节电子结构。Fe、Co-N 共掺杂碳材料具有大量的吡啶 N 和 M-N,石墨化程度高,BET 表面积大。FeCo@NC 具有出色的双功能活性,在 10 mA cm-2 的条件下可提供较小的 OER 电压(E10 = 1.67 V)和显著的 ORR 半波电压(E1/2 = 0.86 V)。更令人印象深刻的是,在组装 ZAB 时,它显示出显著的速率性能、巨大的比容量(783.9 mAh gZn-1)和令人满意的长期耐久性。这种调节共价有机框架和离子热合成的方法可扩展用于设计多种催化剂。
Covalent organic framework-derived Fe, Co-nitrogen codoped carbon as a bifunctional electrocatalyst for rechargeable efficient Zn–air batteries
The development of cathode materials with controllable physicochemical structures and explicit catalytic sites is important in rechargeable Zn–air batteries (ZABs). Covalent organic frameworks (COFs) have garnered increasing attention owing to their facile synthesis methods, ordered pore structure, and selectivity of functional groups. However, the sluggish kinetics of oxygen evolution reaction (OER) or oxygen reduction reaction (ORR) inhibit their practical applications in ZABs. Herein, nucleophilic substitution is adopted to synthesize pyridine bi-triazine covalent organic framework (denoted as O-COF), and meanwhile, ionothermal conversion synthesis is employed to load MOx (M=Fe, Co) onto carbon nanosheet (named as FeCo@NC) to modulate the electronic structure. The Fe, Co-N codoped carbon material possesses a large portion of pyridinic N and M-N, high graphitization, and a larger BET surface area. An outstanding bifunctional activity has been exhibited in FeCo@NC, which provides a small voltage at 10 mA cm−2 for OER (E10 = 1.67 V) and a remarkable half-wave voltage for ORR (E1/2 = 0.86 V). More impressively, when assembling ZABs, it displays notable rate performance, significant specific capacity (783.9 mAh gZn−1), and satisfactory long-term endurance. This method of regulating covalent organic framework and ionothermal synthesis can be extended to design diverse catalysts.