高等学校化学学报 ›› 2024, Vol. 45 ›› Issue (10): 20240333.doi: 10.7503/cjcu20240333

• 物理化学 • 上一篇    下一篇

一种吡嗪基共价有机聚合物的制备及在水系锌离子电池正极中的应用

陈辉1, 吕双坤2, 王春芳2, 吕海明3, 张玉琦1, 李然1()   

  1. 1.延安大学化学与化工学院, 延安 716000
    2.松山湖材料实验室, 东莞 523808
    3.香港城市大学材料科学及工程系, 香港 999077
  • 收稿日期:2024-07-03 出版日期:2024-10-10 发布日期:2024-09-04
  • 通讯作者: 李然 E-mail:lirandeqhd@vip.163.com
  • 作者简介:第一联系人:共同第一作者.
  • 基金资助:
    国家自然科学基金(21663032);陕西省科技资源开放共享平台项目(2021PT-004);陕西自然科学基础研究计划重点项目(2020QFY09-03);延安市优秀人才专项基金(2019-18);延安大学博士启动基金(YDBK2019-32);广西一级学科(农业资源与环境)项目、 延安市多尺度材料组学及其应用交叉学科科技创新团队项目和延安市重点产业链项目(2022SLZDCY-013)

Preparation of a Pyrazine-based Covalent Organic Polymer and Its Applition in Aqueous Zinc Ion Battery Cathode

CHEN Hui1, LYU Shuangkun2, WANG Chunfang2, LYU Haiming3, ZHANG Yuqi1, LI Ran1()   

  1. 1.College of Chemistry and Chemical Engineering,Yan’an University,Yan’an 716000
    2.Songshan Lake Materials Laboratory,Dongguan 523808,China
    3.Department of Materials Science and Engineering,City University of Hong Kong,Hong Kong SAR 999077,China
  • Received:2024-07-03 Online:2024-10-10 Published:2024-09-04
  • Contact: LI Ran E-mail:lirandeqhd@vip.163.com
  • Supported by:
    the National Natural Science Foundation of China(21663032);the Open Sharing Platform for Scientific and Technological Resources of Shaanxi Province, China(2021PT-004);the Natural Science Fundamental Research Program Key Projects of Shaanxi Province, China(2020QFY09-03);the Municipal Special Fund of Yan’an for Outstanding Talented, China(2019-18);the Yan’an University Foundation for Talents Introduction, China(YDBK2019-32);the Guangxi First-class Disciplines(Agricultural Resources and Environment), China, the Yan’an Municipal Foundation for Multiscale Materials Omics and Its Applications Interdisciplinary Science and Technology Innovation Team, China and the Yan’an Municipal Key Industrial Chain Projects, China(2022SLZDCY-013)

摘要:

共价有机聚合物(COPs)是由有机小分子单体聚合而成, 具有通过共价键连接的高度交联网络结构, 因此展现出独特的电化学特性. 在水系锌离子电池(AZIBs)领域, COPs作为电极材料, 参与离子嵌入与脱嵌, 因其特有的氧化还原活性位点和稳定的框架结构而备受关注. 本文报道了一种新型的含有多种电化学活性位点(如吡嗪基、 苯亚胺基和羰基等)的共价有机聚合物TAPT-HAT-COP, 并将其用作AZIBs的正极材料. 实验 结果表明, 该共价有机聚合物材料展现了优异的倍率性能. 在0.5 A/g的电流密度下, 首次放电比容量达到 137 mA∙h∙g¹; 在5 A/g的高电流密度下, 经过4000次循环后仍能保持45.4%的容量. 本文研究结果为有机正极材料的设计提供了新的思路, 并可为开发先进的水系锌离子电池新型有机正极材料提供参考.

关键词: 共价有机聚合物, 水系锌离子电池, 正极材料

Abstract:

Covalent organic polymers(COPs) are polymerized organic small molecule monomers with a highly cross-linked network structure connected by covalent bonds, and thus can exhibit unique electrochemical properties. In the field of aqueous zinc ion batteries(AZIBs), COPs are used as electrode materials involved in ion embedding and de-embedding, and have attracted much attention due to their unique redox active sites and stable framework structures. In this paper, a novel covalent organic polymer, TAPT-HAT-COP, which contains a variety of electrochemical active sites, such as pyrazine group, phenylimine group, and carbonyl group, was prepared and applied to the anode of AZIBs. Experimental results show that this material exhibited excellent multiplicity performance. At a current density of 0.5 A/g, its first discharge specific capacity reached 137 mA∙h∙g‒1, and at a high current density of 5 A/g, the electrode material maintained 45.4% of its capacity after 4000 cycles. This study provides a new idea for the design of organic cathode materials and theoretical guidance for the development of new organic cathode materials for advanced aqueous zinc ion batteries.

Key words: Covalent organic polymer, Aqueous zinc ion batterie, Cathode material

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