高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

一种高容量π-共轭有机聚合物的制备及在二次水系锌电池正极中的应用

林子睿, 邢耀文, 宋义昊, 桂夏辉   

  1. 中国矿业大学
  • 收稿日期:2025-10-21 修回日期:2025-11-26 网络首发:2025-12-07 发布日期:2025-12-07
  • 通讯作者: 林子睿 E-mail:linzrys@cumt.edu.cn
  • 基金资助:
    徐州市省市联合基础研究专项资金（批准号：KC2025022）、国家自然科学基金（批准号：52504319）、国家重点研发计划项目（批准号：2021YFC2902600, 2023YFE0100600）资助

Preparation of a High-capacity π-Conjugated Polymer and Its Application in Rechargeable Aqueous Zinc Battery Cathode

LIN Zirui, XING Yaowen, SONG Yihao, GUI Xiahui   

  1. China University of Mining and Technology
  • Received:2025-10-21 Revised:2025-11-26 Online First:2025-12-07 Published:2025-12-07
  • Contact: Zirui Lin E-mail:linzrys@cumt.edu.cn
  • Supported by:
    Supported by the Xuzhou Provincial-City Joint Basic Research Special Fund, China(No. KC2025022), the National Natural Science Foundation of China (No. 52504319) and the National Key Research and Development Program of China(Nos. 2021YFC2902600, 2023YFE0100600)

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摘要： π-共轭聚合物由活性有机小分子聚合而成，具有扩展共轭结构，能够用于克服活性小分子易溶解、导电性差的缺陷. 在可充电水系锌电池（RAZBs）领域，π-共轭聚合物因具有高理论容量而备受瞩目. 本文设计并合成了一种具有丰富吡嗪基与羰基活性位点的π-共轭聚合物，聚（5,8-二氮杂-1,4萘醌） [poly(5,8-diaza-1,4-naphthoquinone), PANQ]，用作RAZBs正极活性材料. 实验结果表明，PANQ具有高放电容量、优良倍率性能与循环稳定性. 在0.2 A/g电流密度下表现出443.4 mAh/g可逆容量，对应于90.5%的高理论容量利用率；在5 A/g电流密度下循环1000次后，容量保持率为65%. 本文提供了一种具有较大储能潜力的π-共轭聚合物材料，能够为开发高性能RAZBs及其他储能元件提供备选与参考.

关键词:  , π-共轭聚合物；水系锌电池；有机正极；储能机理；高容量

Abstract: π-Conjugated polymers constructed from active small molecules exhibit extended conjugated structures, overcoming the solubility and conductivity challenges of small molecules. Along with their high theoretical capacities, such materials have attracted increasing attention as cathodes for rechargeable aqueous zinc batteries (RAZBs). Herein, we designed and synthesized an active-site-rich π-conjugated polymer, poly(5,8-diaza-1,4-naphthoquinone) (PANQ), as a high-performance RAZBs cathode material. The PANQ cathode delivers high discharge capacities, rate capability and cycling stability, achieving a reversible capacity of 443.4 mAh/g at 0.2 A/g, corresponding to 90.5% of its theoretical capacity, and retaining 65% of its capacity after 1000 discharge-charge cycles. This work demonstrates a promising π-conjugated polymer with efficient energy-storage capability, offering a potential cathode candidate for developing high-performance RAZBs and other energy-storage systems.

Key words: π-Conjugated polymers, Aqueous zinc batteries, Organic cathodes, Energy storage mechanism, High-capacity

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