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首页> 外文期刊>RSC Advances >One-step template-free electrodeposition of novel poly(indole-7-carboxylic acid) nanowires and their high capacitance properties
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One-step template-free electrodeposition of novel poly(indole-7-carboxylic acid) nanowires and their high capacitance properties

机译：新型聚（吲哚-7-羧酸）纳米线的一步式模板电沉积及其高电容性能

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摘要

Poly(indole-7-carboxylic acid) (PICA) nanowires with conductivity of 5 x 10(-2) S cm(-1) were prepared by a facile, one-step and template-free electrodeposition method. The hydrogen bond interactions between the N-H group and the carboxyl group facilitated the formation of PICA nanowires. The diameter of the PICA nanowires was about 40 nm confirmed by scanning electron microscopy. Fourier transformation infrared spectroscopy and H-1 NMR spectroscopy confirmed that the polymerization occurred at the C-2 and C-3 position on the indole ring. The electrochemical capacitance properties of the PICA nanowires were investigated with cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscope techniques. A remarkable specific capacitance of 373.2 F g(1) was obtained at a current density of 2.5 A g(-1) in 1.0 M H2SO4 solution. PICA nanowires presented an excellent cycle life with 91% specific capacitance retention after 1000 charge-discharge processes. The energy density of the symmetric full cell based on two PICA electrodes was 7.03 W h kg(-1) at a power density of 4500 W kg(-1). These results implied that the PICA nanowires will be a promising electrode material for supercapacitors.
机译：通过容易，一步和无模板电沉积法制备具有5×10（-2）厘米（-1）的电导率的聚（吲哚-7-羧酸）（PICA）纳米线。 N-H组和羧基之间的氢键相互作用促进了PICA纳米线的形成。通过扫描电子显微镜，PICA纳米线的直径约为40nm。傅里叶变换红外光谱和H-1 NMR光谱证实，聚合在吲哚环上的C-2和C-3位置发生。用循环伏安法，电镀电荷 - 放电和电化学阻抗分光镜技术研究了PICA纳米线的电化学电容性质。在1.0M H 2 SO 4溶液中的电流密度为2.5Ag（-1），获得了373.2V（1）的显着比电容。 PICA纳米线在1000充放电过程后，呈现出优异的循环寿命，具有91％的特定电容保留。基于两个PICA电极的对称全电池的能量密度以4500W kg（-1）的功率密度为7.03WH kg（-1）。这些结果暗示PICA纳米线将是超级电容器的有希望的电极材料。

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  • 来源
    《RSC Advances》 |2015年第5期|共9页
  • 作者

    Ma Xiumei; Zhou Weiqiang; Mo Daize; Lu Baoyang; Jiang Fengxing; Xu Jingkun;

  • 作者单位

    Jiangxi Sci &

    Technol Normal Univ Jiangxi Key Lab Organ Chem Nanchang 330013 Peoples R China;

    Jiangxi Sci &

    Technol Normal Univ Jiangxi Key Lab Organ Chem Nanchang 330013 Peoples R China;

    Jiangxi Sci &

    Technol Normal Univ Jiangxi Key Lab Organ Chem Nanchang 330013 Peoples R China;

    Jiangxi Sci &

    Technol Normal Univ Sch Pharm Nanchang 330013 Peoples R China;

    Jiangxi Sci &

    Technol Normal Univ Dept Phys Nanchang 330013 Peoples R China;

    Jiangxi Sci &

    Technol Normal Univ Jiangxi Key Lab Organ Chem Nanchang 330013 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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