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Atmospheric-pressure-plasma-jet processed carbon nanotube (CNT)-reduced graphene oxide (rGO) nanocomposites for gel-electrolyte supercapacitors

机译:用于凝胶电解质超级电容器的大气压 - 血浆 - 射流加工碳纳米管(CNT) - 纳米氧化物(RGO)纳米复合材料

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摘要

This study evaluates DC-pulse nitrogen atmospheric-pressure-plasma-jet processed carbon nanotube (CNT)-reduced graphene oxide (rGO) nanocomposites for gel-electrolyte supercapacitor applications. X-ray photoelectron spectroscopy (XPS) indicates decreased oxygen content (mainly, C-O bonding content) after nitrogen APPJ processing owing to the oxidation and vaporization of ethyl cellulose. Nitrogen APPJ processing introduces nitrogen doping and improves the hydrophilicity of the CNT-rGO nanocomposites. Raman analysis indicates that nitrogen APPJ processing introduces defects and/or surface functional groups on the nanocomposites. The processed CNT-rGO nanocomposites on carbon cloth are applied to the electrodes of H2SO4-polyvinyl alcohol (PVA) gel-electrolyte supercapacitors. The best achieved specific (areal) capacitance is 93.1 F g(-1) (9.1 mF cm(-2)) with 15 s APPJ-processed CNT-rGO nanocomposite electrodes, as evaluated by cyclic voltammetry under a potential scan rate of 2 mV s(-1). The addition of rGOs in CNTs in the nanoporous electrodes improves the supercapacitor performance.
机译:该研究评估了用于凝胶电解质超级电容器应用的DC脉冲氮气压 - 血浆 - 射流加工的碳纳米管(CNT) - 纳米氧化物(RGO)纳米复合材料。由于乙基纤维素的氧化和蒸发,X射线光电子能谱(XPS)表明氮APPJ处理后的氧含量(主要是C-O键合含量)降低。氮Appj处理引入氮掺杂并提高了CNT-RGO纳米复合材料的亲水性。拉曼分析表明氮Appj处理在纳米复合材料上引入缺陷和/或表面官能团。将加工的CNT-RGO纳米复合材料施加到H 2 SO 4-聚乙烯醇(PVA)凝胶电解质超级电容器的电极上。最佳达到的特异性(区域)电容为93.1fg(-1)(9.1mF cm(-2)),其中15秒的Appj加工的Cnt-rgo纳米复合电极,通过循环伏安法评估的潜在扫描速率为2 mV s(-1)。在纳米孔电极中的CNT中加入RGOS改善了超级电容器性能。

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  • 来源
    《RSC Advances》 |2018年第6期|共7页
  • 作者单位

    Natl Taiwan Univ Grad Inst Appl Mech Taipei 10617 Taiwan;

    Natl Taiwan Univ Grad Inst Appl Mech Taipei 10617 Taiwan;

    Natl Taiwan Univ Grad Inst Appl Mech Taipei 10617 Taiwan;

    Natl Dong Hwa Univ Dept Mat Sci &

    Engn Hualien 97401 Taiwan;

    Natl Dong Hwa Univ Dept Mat Sci &

    Engn Hualien 97401 Taiwan;

    Natl Taiwan Univ Dept Chem Engn Taipei 10617 Taiwan;

    Natl Taiwan Univ Grad Inst Photon &

    Optoelect Dept Elect Engn Taipei 10617 Taiwan;

    Natl Taiwan Univ Grad Inst Appl Mech Taipei 10617 Taiwan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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