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Boosting storage properties of reduced graphene oxide fiber modified with MOFs-derived porous carbon through a wet-spinning fiber strategy

机译：通过湿纺纤维策略提高用MOF衍生多孔碳改性的石墨烯氧化物纤维的储存性能

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摘要

Supercapacitors that are light weight and flexible, while occupying a low volume and demonstrating good mechanical properties are in demand for portable energy storage devices. Graphene composite fibers are supposed to be ideal electrodes for flexible fiber-shaped supercapacitors. Integration of MOFs-derived porous carbon into graphene fibers provides desirable electrochemical and mechanical properties. Herein, a general strategy is shown for the preparation of MOFs-derived porous carbon/reduced graphene oxide fibers. Close-packed and aligned graphene sheets along with porous MOFs-derived porous carbon can achieve outstanding mechanical properties through synergistic effects. Consequently, a large specific capacitance of 56.05 F cm(-3), a good tensile property of 86.5 MPa and a high retention of 96.6% after 10 000 cycles can be achieved with the composite fibers. Moreover, a further deposition of polyaniline (PANI) and manganese dioxide (MnO2) byin situgrowth on the fabricated composite fibers provide an improvement in specific capacitance with value of 74.21 F cm(-3)and 65.08 F cm(-3), respectively. The above results demonstrate the promising application of composite fibers as a flexible and stable electrode and substrate for energy storage devices.
机译：对于便携式能量存储装置，占据低体积并施加良好的机械性能的超级电容器，同时占据低体积，并展示良好的机械性能。石墨烯复合纤维应该是柔性纤维状超级电容器的理想电极。将MOFS衍生的多孔碳与石墨烯纤维的整合提供了所需的电化学和机械性能。在此，示出了一种用于制备MOFS衍生的多孔碳/还原氧化物纤维的一般策略。封闭填充和对齐的石墨烯片以及多孔MOF衍生的多孔碳可以通过协同效应来实现出色的机械性能。因此，通过复合纤维可以实现大小的56.05厘米（-3），良好的拉伸性，86.5MPa的良好拉伸性能为96.6％，高96.6％。此外，在制造的复合纤维上进一步沉积聚苯胺（PANI）和二氧化锰（MNO2）逐次出株的原料在特定电容上分别具有74.21fcm（-3）和65.08fcm（-3）的特定电容的改善。上述结果证明了复合纤维作为柔性且稳定的电极和基板的承诺施加储能装置。

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  • 来源
    《Nanotechnology》 |2020年第39期|共10页
  • 作者

    Yao Mengyao; Ji Dongxiao; Chen Yaoyan; Wang Zhe; Dong Jie; Zhang Qinghua; Ramakrishna Seeram; Zhao Xin;

  • 作者单位

    Donghua Univ State Key Lab Modificat Chem Fibers &

    Polymer Mat Coll Mat Sci &

    Engn Shanghai 201620 Peoples R China;

    Natl Univ Singapore Dept Mech Engn Singapore 117574 Singapore;

    Donghua Univ State Key Lab Modificat Chem Fibers &

    Polymer Mat Coll Mat Sci &

    Engn Shanghai 201620 Peoples R China;

    Donghua Univ State Key Lab Modificat Chem Fibers &

    Polymer Mat Coll Mat Sci &

    Engn Shanghai 201620 Peoples R China;

    Donghua Univ State Key Lab Modificat Chem Fibers &

    Polymer Mat Coll Mat Sci &

    Engn Shanghai 201620 Peoples R China;

    Donghua Univ State Key Lab Modificat Chem Fibers &

    Polymer Mat Coll Mat Sci &

    Engn Shanghai 201620 Peoples R China;

    Natl Univ Singapore Dept Mech Engn Singapore 117574 Singapore;

    Donghua Univ State Key Lab Modificat Chem Fibers &

    Polymer Mat Coll Mat Sci &

    Engn Shanghai 201620 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 特种结构材料;
  • 关键词

    graphene oxides; MOFs; nanoporous carbon; supercapacitors; PANI; manganese dioxide;

    机译：石墨烯氧化物;MOFS;纳米孔碳;超级电容器;PANI;二氧化锰;

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