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电化学(中英文) ›› 2018, Vol. 24 ›› Issue (4): 359-366.  doi: 10.13208/j.electrochem.180110

• 研究论文 • 上一篇    下一篇

自支撑柔性氮掺杂碳织物电极的制备与性能研究

杨波2,金直航2,赵亚萍1*,蔡再生2   

  1. 1. 东华大学化学化工与生物工程学院,上海 2016201;2. 东华大学基础化学实验中心,上海 201620
  • 收稿日期:2018-01-20 修回日期:2018-02-23 出版日期:2018-08-28 发布日期:2018-04-10
  • 通讯作者: 赵亚萍 E-mail: zhaoyping@dhu. edu. cn
  • 基金资助:
    国家自然科学基金项目(No. 51303022)资助及中央高校基本科研业务费专项资金(No. 2232015D3-17)资助

Preparation and Characterization of Self-Supporting Flexible Nitrogen-Doped Carbon Fabric Electrodes

YANG Bo2, JIN Zhi-hang2, ZHAO Ya-ping1*, CAI Zai-sheng2   

  1. 1. College of Chemistry, Chemical Engineering & Biotechnology, Donghua University, Shanghai 201620, China; 2. Fundamental Experimental Chemistry Center, Donghua University, Shanghai 201620, China
  • Received:2018-01-20 Revised:2018-02-23 Published:2018-08-28 Online:2018-04-10
  • Contact: ZHAO Ya-ping E-mail: zhaoyping@dhu. edu. cn

摘要:

本文以纯棉织物为基底,吡咯单体为氮源,采用简单的原位聚合-高温煅烧的方法制备了自支撑柔性氮掺杂织物(N-CT). 利用傅立叶红外技术、X射线光电子能谱、比表面积测试、扫描电子显微镜对所得产物进行结构与形貌表征. 结果表明,碳化后聚吡咯主要以纳米碳球包覆在碳织物表面,N-CT电极的比表面积为495.0 m2·g-1,其含氮量为2.26%. 电化学测试表明,在0.5 A·g-1的电流密度下N-CT电极的比电容器为256.2 F·g-1,经过5000次的恒流充放电循环后电容保持率为98.3%,库伦效率保持率在98.8%左右,具有良好的柔性和机械性能.

关键词: 聚吡咯, 纯棉织物, 氮掺杂碳, 柔性电极, 超级电容器

Abstract:

With the wide applications of intelligent wearable devices in various fields, developing a new generation of flexible energy storage devices has become a major challenge for the current technology. As a wide application of wearable flexible substrate, cotton fabric has the advantages over low price, non-toxic and environmental friendly, but the poor conductivity becomes a major problem limiting its development. As a nitrogen-containing conducting polymer, polypyrrole is traditionally used as electrode materials, but poor mechanical performance and cycle stability severely limit its application in electrode materials. In this article, a self-supporting flexible nitrogen-doped carbon fabric electrode was prepared by in situ polymerization-high temperature calcination method using cotton as a substrate and polypyrrole as a nitrogen source. The high temperature carbonization transformed the non-conductive cotton fabric into a good conductive carbon fabric while retaining its original three-dimensional structure and the nitrogen was mixed into carbon materials at the same time. The structure was characterized by Fourier infrared spectroscopy, specific surface area test, scanning electron microscopy and X-ray photoelectron spectroscopy. The results demonstrated that the cotton fiber was uniformly coated by polypyrrole that was subsequently carbonized into nanocarbon, the specific surface area of the obtained nitrogen-doped carbon (N-CT) electrode was 495.0 m2·g-1 and the nitrogen content was 2.26%. The electrochemical performance test showed that the N-CT electrode had a capacitance of 256.2 F·g-1 at a current density of 0.5 A·g-1. The stability test revealed that the capacitance retention was 98.3% and the coulomb effciency was about 98.8% after 5000 charge-discharge cycles. Meanwhile, the N-CT electrode exhibited good flexibility and mechanical properties.

Key words: polypyrrole, cotton, nitrogen doped carbon, flexible electrode, supercapacitor

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