物理化学学报 >> 2016, Vol. 32 >> Issue (5): 1199-1206.doi: 10.3866/PKU.WHXB201602222

研究论文 上一篇    下一篇

柔性复合织物电极Graphene/Cotton和MnO2/Graphene/Cotton的合成及在电化学电容器中的应用

边绍伟*(),许玲利,郭美霞,邵福,刘思   

  • 收稿日期:2015-11-16 发布日期:2016-05-07
  • 通讯作者: 边绍伟 E-mail:swbian@dhu.edu.cn; bianshaowei@iccas.ac.cn
  • 基金资助:
    国家自然科学基金(51402048);中央高校基本科研业务费和东华大学励志计划及教育部留学回国人员科研启动资金资助项目

Fabrication of Graphene/Cotton and MnO2/Graphene/Cotton Composite Fabrics as Flexible Electrodes for Electrochemical Capacitors

Shao-Wei BIAN*(),Ling-Li XU,Mei-Xia GUO,Fu SHAO,Si LIU   

  • Received:2015-11-16 Published:2016-05-07
  • Contact: Shao-Wei BIAN E-mail:swbian@dhu.edu.cn; bianshaowei@iccas.ac.cn
  • Supported by:
    the National Natural Science Foundation of China(51402048);Fundamental Research Funds for the Central Universities, China, DHU Distinguished Young Professor Program, and Scientific Research Foundation for the Returned Overseas Chinese Scholars, Ministry of Education of China

摘要:

通过热还原法成功地制备出了柔性复合织物电极石墨烯/棉布(graphene/cotton)。热还原条件对电极的导电性能具有较大的影响。导电柔性织物电极graphene/cotton特有的多级结构使其既有利于进一步负载膺电容材料,又有利于电子和电解质离子的传输与扩散。通过电化学沉积方法,利用导电柔性织物电极graphene/cotton进一步制备出了电极MnO2/graphene/cotton。利用扫描电子显微镜(SEM),傅里叶变换红外(FTIR)光谱,四探针测试法等表征技术对电极的结构进行了较为详细的表征。结果表明电极MnO2/graphene/cotton的比电容可以达到536 F·g-1。良好的电化学性能和柔性使得此类电极在柔性储能材料应用中具有极大的应用前景。

关键词: 石墨烯, 棉布, 电化学电容器, 柔性电极, 织物

Abstract:

Graphene/cotton composite fabrics for use as flexible electrodes were prepared using a thermal reduction method. The reducing condition significantly influenced the conductivity of the graphene/cotton fabrics. The conductive graphene/cotton fabrics with hierarchical structures used as flexible electrode substrates facilitate the loading of pseudocapacitor materials, enhancing electron transport and electrolyte ion diffusion. The electrode structure was characterized in detail using scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and the standard four-point probe method. After further electrochemical deposition of MnO2 sheets on the composite fabrics, the resulting MnO2/graphene/cotton composite fabrics for use as electrode materials had excellent electrochemical performance and great flexibility. The specific capacitance reached 536 F·g-1 at a scan rate of 5 mV·s-1. The electrochemical test results indicate that it can be further used for flexible energy storage materials.

Key words: Graphene, Cotton, Electrochemical capacitor, Flexible electrode, Textile

MSC2000: 

  • O646