Chem. J. Chinese Universities ›› 2024, Vol. 45 ›› Issue (10): 20240333.doi: 10.7503/cjcu20240333

• Physical Chemistry • Previous Articles     Next Articles

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)

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

CLC Number: 

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