This work focuses on designing new electrode materials by fabricating a nanocomposite hybrid of MWCNTs and a binary metal oxide, ZnMn₂O₄. The ZnMn₂O₄ 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 ZnMn₂O₄-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 ZnMn₂O₄ 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 Na₂SO₄ electrolyte in terms of cyclic voltammetry, galvanostatic charge discharge and electrochemical impedance spectroscopy analyses. The synergistic interaction between the MWCNTs and the ZnMn₂O₄ nanoparticles resulted in a high specific capacitance of 103 F/g of the as-fabricated electrode.

这项工作致力于通过制造MWCNTs和二元金属氧化物ZnMn ₂ O ₄的纳米复合材料来设计新的电极材料。ZnMn ₂ O 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，然而，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和用于超级电容器应用的一步绿色水热法制备ZnMn ₂ O ₄ -CNT纳米复合材料。复合材料的SEM分析表明，ZnMn ₂ O 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 ₂ SO ₄电解质中以三电极配置进行了电化学表征。MWCNT与ZnMn ₂ O ₄纳米颗粒之间的协同相互作用导致所制成电极的比电容为103 F / g。