化工进展 ›› 2024, Vol. 43 ›› Issue (9): 5113-5122.DOI: 10.16085/j.issn.1000-6613.2023-1291

• 材料科学与技术 • 上一篇    

PAN/MXene同轴纤维电极的制备及性能

屈芸1(), 成丽媛1, 代国亮2(), 王刚2, 郭羽晴1, 孙洁1()   

  1. 1.江南大学纺织与科学工程学院,江苏 无锡 214122
    2.中国人民解放军军事科学院系统工程研究院,北京 100010
  • 收稿日期:2023-07-26 修回日期:2023-09-11 出版日期:2024-09-15 发布日期:2024-09-30
  • 通讯作者: 代国亮,孙洁
  • 作者简介:屈芸(1999—),女,硕士研究生,研究方向为纤维电极柔性超级电容器。E-mail:994253393@qq.com
  • 基金资助:
    国家自然科学基金(51903109)

Preparation and properties of PAN/MXene coaxial fiber electrode

QU Yun1(), CHENG Liyuan1, DAI Guoliang2(), WANG Gang2, GUO Yuqing1, SUN Jie1()   

  1. 1.College of Textile Science and Engineering, Jiangnan University, Wuxi 214122, Jiangsu, China
    2.Systems Engineering Institute, Academy of Military Sciences (AMS), Beijing 100010, China
  • Received:2023-07-26 Revised:2023-09-11 Online:2024-09-15 Published:2024-09-30
  • Contact: DAI Guoliang, SUN Jie

摘要:

采用单片层MXene、聚甲基丙烯酸甲酯(PMMA)和聚丙烯腈(PAN)粉末为原料制备不同纺丝液,经过同轴湿法纺丝成型、高温炭化制备出一系列不同壳芯组分同轴纤维电极;分析不同壳层、芯层材料对纤维电极微观结构以及力学、电学、电化学等性能的影响规律。结果表明,当以PAN/MXene为壳层、PAN/PMMA为芯层时,可以实现电极材料力学性能与电化学性能的平衡,拉伸强度、电导率和比电容分别为可达到14.4MPa、322.7S/m和113.18F/g,经过1000次恒电流充放电测试(GCD)循环后,比电容保持率可达到95.7%。

关键词: 纤维电极, MXene, 同轴纤维, 湿法纺丝, 电化学储能

Abstract:

A series of coaxial fiber electrode samples with different sheath and core component were prepared through wet-spinning method combined with subsequent high temperature carbonization. Single-layer MXene sheets, polymethyl methacrylate (PMMA) and polyacrylonitrile (PAN) were applied in this study for making various spinning solution. The influence of different material constitution of the sheath and core layer on the property of as-prepared fiber electrodes, including microstructure, mechanical strength, electrical conductivity and electrochemical performance, was discussed and analyzed. The results showed that the fiber electrode sample with PAN/MXene sheath layer and PAN/PMMA core layer could achieve balance between the electrochemical performance and mechanical strength. The tensile breaking strength, specific conductance and specific capacitance reached 14.4MPa, 322.7S/m and 113.18F/g, respectively. In addition, the fiber electrode also had good cycle stability with capacitance retention rate at 95.7% after 1000 GCD cycles.

Key words: fiber electrode, MXene, coaxial fiber, wet-spinning, electrochemical energy storage

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