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首页> 外文期刊>Materials Science and Engineering >One-step green route synthesis of spinel ZnMn_2O_4 nanoparticles decorated on MWCNTs as a novel electrode material for supercapacitor
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One-step green route synthesis of spinel ZnMn_2O_4 nanoparticles decorated on MWCNTs as a novel electrode material for supercapacitor

机译：MWCNTs上装饰的尖晶石ZnMn_2O_4纳米颗粒作为新型超级电容器电极材料的一步绿色路线合成

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摘要

This work focuses on designing new electrode materials by fabricating a nanocomposite hybrid of MWCNTs and a binary metal oxide, ZnMn_2O_4. The ZnMn_2O_4 has been extensively investigated as a high-performance anode in Li-ion battery, however, its capacitive faradaic charge storage behavior is rarely explored. Herein we demonstrate the fabrication of ZnMn_2O_4-CNT nanocomposites using acid modified MWCNTs and a one-step green hydrothermal method for supercapacitor application. The SEM analysis of the as-fabricated composites showed that the ZnMn_2O_4 nanoparticles were uniformly anchored on the MWCNTs backbone, which helps to maintain good electrical channel throughout the composite. Electrochemical characterizations were carried out in a three-electrode configuration in the 1 M Na_2SO_4 electrolyte in terms of cyclic voltammetry, galvanostatic charge discharge and electrochemical impedance spectroscopy analyses. The synergistic interaction between the MWCNTs and the ZnMn_2O_4 nanoparticles resulted in a high specific capacitance of 103 F/g of the as-fabricated electrode.
机译：这项工作致力于通过制造MWCNTs和二元金属氧化物ZnMn_2O_4的纳米复合材料来设计新的电极材料。 ZnMn_2O_4作为锂离子电池中的高性能阳极已经得到了广泛的研究，但是，其电容性法拉第电荷存储行为却很少被研究。在本文中，我们演示了使用酸改性的MWCNT和一步法绿色水热法制备超级电容器的ZnMn_2O_4-CNT纳米复合材料的制备。制备的复合材料的SEM分析表明，ZnMn_2O_4纳米颗粒均匀地锚固在MWCNTs骨架上，这有助于在整个复合材料中保持良好的电通道。根据循环伏安法，恒静电荷放电法和电化学阻抗谱分析，在1 M Na_2SO_4电解质中以三电极结构进行了电化学表征。 MWCNT与ZnMn_2O_4纳米粒子之间的协同相互作用导致所制造电极的比电容为103 F / g。

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  • 来源
    《Materials Science and Engineering》 |2020年第2期|114481.1-114481.8|共8页
  • 作者

  • 作者单位

    Centre for Nana and Material Sciences Jain University Bangalore 562112 India;

    Centre for Nana and Material Sciences Jain University Bangalore 562112 India IMDEA Water Institute Avenida Punto Com 2. Parque Cientlfico Tecnologico it la Untversidad it Alcala Alcala it Henares 28805 Madrid Spain;

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  • 正文语种 eng
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  • 关键词

    Zinc manganate; MWCNT; Nanocomposite; Electrode material; Supercapacitor;

    机译：锰酸锌;MWCNT;纳米复合材料电极材料;超级电容器;

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