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首页> 外文期刊>RSC Advances >Porous graphene-carbon nanotube hybrid paper as a flexible nano-scaffold for polyaniline immobilization and application in all-solid-state supercapacitors
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Porous graphene-carbon nanotube hybrid paper as a flexible nano-scaffold for polyaniline immobilization and application in all-solid-state supercapacitors

机译：多孔石墨烯 - 碳纳米管杂交纸作为柔性纳米支架，用于聚苯胺固定化和全固态超级电容器的应用

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摘要

Polyaniline (PANI) has been recognized as an ideal candidate for electrode materials in supercapacitors. However, the relatively low electrical conductivity and poor cyclic stability severely limit its potential applications. Therefore, a proper substrate with carefully designed nanostructures for PANI immobilization is highly desirable for realizing its full performance. In this study, three-dimensional porous graphene-carbon nanotube (p-GC) hybrid papers with high porosity, excellent electrical conductivity and good flexibility were utilized as a nano-scaffold for the in situ polymerization of PANI, thus obtaining flexible p-GC/PANI ternary hybrid papers with hierarchical nanostructures. The good electrical conductivity and optimized porous nanostructure of the p-GC hybrid paper provides improved conductive pathways and high surface area, ensuring the efficient utilization of the pseudocapacitance of PANI. Thus, the ternary hybrid paper exhibits a high specific capacitance of up to 409 F g(-1) at a current density of 10 A g(-1), as well as excellent rate and cyclic performance. Furthermore, the dimensional confinement of PANI particles within the p-GC framework effectively prohibits volume expansion and shrinkage upon electrolyte soakage and cycling. Therefore, the p-GC hybrid paper with tunable hierarchical nanostructures can act as a promising substrate to enhance the electrochemical properties of PANI or other electroactive materials and can be easily extended to the design of next-generation high-performance flexible supercapacitors.
机译：二苯胺（PANI）已被认为是超级电容器中电极材料的理想候选者。然而，相对低的电导率和循环稳定性差的较差严重限制其潜在的应用。因此，对于PANI固定化的仔细设计纳米结构的适当基材非常希望能够实现其全部性能。在该研究中，用高孔隙率，优异的导电性和良好柔韧性的三维多孔石墨烯 - 碳纳米管（P-GC）杂合纸作为粉底粉的原位聚合作为纳米支架，从而获得柔性P-GC / Pani三元杂交纸具有分层纳米结构。 P-GC杂交纸的良好导电性和优化的多孔纳米结构提供了改进的导电途径和高表面积，确保了PANI的假偶像的有效利用。因此，三元杂交纸具有高达409V（-1）的高比电容，电流密度为10Ag（-1），以及优异的速率和循环性能。此外，P-GC框架内PANI颗粒的尺寸限制有效地禁止在电解质浸泡和循环上的体积膨胀和收缩。因此，具有可调谐分层纳米结构的P-GC杂交纸可以用作有希望的基底，以增强PANI或其他电活性材料的电化学性质，并且可以容易地扩展到下一代高性能柔性超级电容器的设计。

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  • 来源
    《RSC Advances》 |2015年第39期|共10页
  • 作者

    Fan Wei; Miao Yue-E; Zhang Longsheng; Huang Yunpeng; Liu Tianxi;

  • 作者单位

    Fudan Univ Dept Macromol Sci State Key Lab Mol Engn Polymers Shanghai 200433 Peoples R China;

    Fudan Univ Dept Macromol Sci State Key Lab Mol Engn Polymers Shanghai 200433 Peoples R China;

    Fudan Univ Dept Macromol Sci State Key Lab Mol Engn Polymers Shanghai 200433 Peoples R China;

    Fudan Univ Dept Macromol Sci State Key Lab Mol Engn Polymers Shanghai 200433 Peoples R China;

    Fudan Univ Dept Macromol Sci State Key Lab Mol Engn Polymers Shanghai 200433 Peoples R China;

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  • 正文语种 eng
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