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首页> 外文期刊>RSC Advances >Probing the electrochemical properties of an electrophoretically deposited Co3O4/rGO/CNTs nanocomposite for supercapacitor applications
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Probing the electrochemical properties of an electrophoretically deposited Co3O4/rGO/CNTs nanocomposite for supercapacitor applications

机译：用于超级电容器应用的电泳沉积CO3O4 / RGO / CNT纳米复合材料的电化学性能

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摘要

This study reports the electrochemical performance of pseudosupercapacitor electrodes composed of cubic phase Co3O4 nanoparticles, reduced graphene oxide (rGO) and functionalized MWCNTs based nanocomposites. The Co3O4/rGO/CNTs nanocomposites have been synthesized using a hydrothermal method and the EPD technique has been used to make binder free electrodes of the nanocomposite materials for supercapacitor applications. The effects of graphene oxide (GO) concentration and the ratio of GO/CNTs on the electrochemical performance of the nanocomposite material have been investigated. From the experimental results, the Co3O4/rGO/CNTs nanocomposite synthesized with 2 mg mL (1) GO concentration and 10 : 1 GO/CNT ratio exhibits a good specific capacitance of 850 F g (1) at a 5 mV s(-1) scan rate and 790 F g(-1) at 1 A g(-1), excellent rate capability and good cyclability in 1 M KOH. Furthermore, we have successfully designed an aqueous electrolyte-based asymmetric pseudocapacitor using Co3O4/rGO/CNTs nanocomposite as an anode and N-doped graphene nanocomposite as a cathode. The operating voltage of our optimized asymmetric pseudocapacitor is 1.4 V and it exhibits the maximum energy density and power density of 19.6 W h kg(-1) and 7250 W kg(-1), respectively. These results suggest that our EPD grown nanocomposite binder free electrode and our designed asymmetric pseudocapacitor have a good potential for practical applications.
机译：本研究报告了由立方相CO3O4纳米颗粒，还原氧化物（RGO）和基于官能化的基于型MWCNTS的纳米复合材料组成的伪血吸虫电极的电化学性能。使用水热法合成了CO3O4 / RGO / CNT纳米复合材料，并且EPD技术已被用于制造用于超级电容器应用的纳米复合材料的粘合剂电极。研究了石墨烯氧化物（GO）浓度的影响及GO / CNT比率对纳米复合材料的电化学性能的研究。从实验结果中，用2mg ml（1）GO浓度合成的CO 3 O 4 / Rgo / CNT纳米复合材料在5mV S（-1）下表现出850 f g（1）的良好比电容（-1 ）扫描速率和790f g（-1）在1 a g（-1），优异的速率能力和1 m koh中的良好的可循环性。此外，我们已经成功地设计了一种基于电解质的不对称假偶联机，其使用CO 3 O 4 / Rgo / CNT纳米复合材料作为阳极和N掺杂的石墨烯纳米复合材料作为阴极。我们优化的非对称假型涂料器的工作电压为1.4V，它分别显示出最大能量密度和高功率密度为19.6WH kg（-1）和7250W kg（-1）。这些结果表明，我们的EPD生长纳米复合粘合剂游离电极和我们设计的不对称假胶剂具有良好的实际应用潜力。

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  • 来源
    《RSC Advances》 |2016年第65期|共9页
  • 作者

    Kumar Nagesh; Huang Chun-Wei; Yen Po-Jen; Wu Wen-Wei; Wei Kung-Hwa; Tseng Tseung Yuen;

  • 作者单位

    Natl Chiao Tung Univ Dept Elect Engn Hsinchu 300 Taiwan;

    Natl Chiao Tung Univ Dept Mat Sci &

    Engn Hsinchu 300 Taiwan;

    Natl Chiao Tung Univ Dept Mat Sci &

    Engn Hsinchu 300 Taiwan;

    Natl Chiao Tung Univ Dept Mat Sci &

    Engn Hsinchu 300 Taiwan;

    Natl Chiao Tung Univ Dept Mat Sci &

    Engn Hsinchu 300 Taiwan;

    Natl Chiao Tung Univ Dept Elect Engn Hsinchu 300 Taiwan;

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  • 正文语种 eng
  • 中图分类 化学;
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