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High-performance supercapacitor electrodes based on NiMoO_4 nanorods

机译：基于NiMoO_4纳米棒的高性能超级电容器电极

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摘要

Novel NiMoO4-integrated electrode materials were successfully prepared by solvothermal method using Na2MoO4 center dot 2H(2)O and NiSO4 center dot 6H(2)O as main raw materials, water, and ethanol as solvents. The morphology, phase, and structure of the as-prepared materials were characterized by SEM, XRD, Raman, and FT-IR. The electrochemical properties of the materials in supercapacitors were investigated by cyclic voltammetry, constant current charge-discharge, and electrochemical impedance spectroscopy techniques. The effects of volume ratio of water to ethanol (W/E) in solvent on the properties of the product were studied. The results show that the pure phase monoclinic crystal NiMoO4 product can be obtained when the W/E is 2: 1. The diameter and length are 0.1-0.3 mu m and approximately 3 lm, respectively. As an active material for supercapacitor, the NiMoO4 nanorods material delivered a discharge specific capacitance of 672, 498, and 396 F/g at a current density of 4, 7, and 10 A/g, respectively. The discharge specific capacitance slightly decreased from 815 to 588 F/g with a retention of 72% after 1000 cycles at a current density of 1 A/g. With these superior capacitance properties, the novel NiMoO4 integrated electrode materials could be considered as promising material for supercapacitors.
机译：以Na2MoO4中心点2H（2）O和NiSO4中心点6H（2）O为主要原料，以水和乙醇为溶剂，通过溶剂热法成功制备了新型NiMoO4集成电极材料。通过SEM，XRD，Raman和FT-IR对所制备材料的形貌，相和结构进行了表征。通过循环伏安法，恒流充放电和电化学阻抗谱技术研究了超级电容器中材料的电化学性能。研究了溶剂中水与乙醇的体积比（W / E）对产物性能的影响。结果表明，当W / E为2：1时，可以获得纯相单斜晶NiMoO4产物。直径和长度分别为0.1-0.3μm和约3 lm。作为超级电容器的活性材料，NiMoO4纳米棒材料在4、7和10 A / g的电流密度下分别提供了672、498和396 F / g的放电比电容。放电比电容从815 F / g略微下降到588 F / g，在1 A / g的电流密度下经过1000次循环后的保留率为72％。凭借这些优异的电容性能，新型NiMoO4集成电极材料可被视为超级电容器的有前途的材料。

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  • 来源
    《Journal of Materials Research》 |2019年第14期|2435-2444|共10页
  • 作者

    Zhang Yong; Chang Cui-rong; Gao Hai-li; Wang Shi-wen; Yan Ji; Gao Ke-zheng; Jia Xiao-dong; Luo He-wei; Fang Hua; Zhang Ai-qin; Wang Li-zhen;

  • 作者单位

    Zhengzhou Univ Light Ind, Dept Mat & Chem Engn, Zhengzhou 450002, Henan, Peoples R China|Zhengzhou Univ Light Ind, Henan Prov Key Lab Surface & Interface Sci, Zhengzhou 450002, Henan, Peoples R China;

    Zhengzhou Univ Light Ind, Dept Mat & Chem Engn, Zhengzhou 450002, Henan, Peoples R China;

    Zhengzhou Univ Light Ind, Dept Mat & Chem Engn, Zhengzhou 450002, Henan, Peoples R China;

    Zhengzhou Univ Light Ind, Dept Mat & Chem Engn, Zhengzhou 450002, Henan, Peoples R China;

    Zhengzhou Univ Light Ind, Dept Mat & Chem Engn, Zhengzhou 450002, Henan, Peoples R China;

    Zhengzhou Univ Light Ind, Dept Mat & Chem Engn, Zhengzhou 450002, Henan, Peoples R China;

    Zhengzhou Univ Light Ind, Dept Mat & Chem Engn, Zhengzhou 450002, Henan, Peoples R China;

    Zhengzhou Univ Light Ind, Dept Mat & Chem Engn, Zhengzhou 450002, Henan, Peoples R China;

    Zhengzhou Univ Light Ind, Dept Mat & Chem Engn, Zhengzhou 450002, Henan, Peoples R China;

    Zhengzhou Univ Light Ind, Dept Mat & Chem Engn, Zhengzhou 450002, Henan, Peoples R China;

    Zhengzhou Univ Light Ind, Dept Mat & Chem Engn, Zhengzhou 450002, Henan, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    solvothermal method; NiMoO4-integrated electrode materials; nickel foam; specific capacitance; electrochemical properties;

    机译：溶剂热法;NiMoO4-集成电极材料;泡沫镍;比电容;电化学性能;

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