Abstract The MnCo2O4.5 hexagonal nanoplates and multi-wall carbon nanotube (MWCNT)@MnCo2O4.5 composite were prepared via rapid and low-cost co-precipitation technique. The prepared materials were characterized by various characterization techniques and used as an electrode for supercapacitors. The specific capacitance values of 451 and 1292 F g−1 were obtained from MnCo2O4.5 and MWCNT@MnCo2O4.5, respectively at 1 A g−1. Furthermore, MWCNT@MnCo2O4.5//AC-based device indicated the higher energy density value of 33 W h k g−1 at the power density of 362.5 W k g−1 under the current density of 0.5 A g−1. The practical electronic application of the device was tested by powering twelve light-emitting diodes, a digital watch and a motor fan. From the results of the MnCo2O4.5 with MWCNTs, the MnCo2O4.5 is expected to be a potential viable material for high-performance electrochemical capacitors.

中文翻译：

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多壁碳纳米管装饰的 MnCo2O4.5 六边形纳米板具有增强的电化学行为，可用于高性能电化学电容器

摘要 采用快速、低成本的共沉淀技术制备了MnCo2O4.5六方纳米片和多壁碳纳米管(MWCNT)@MnCo2O4.5复合材料。制备的材料通过各种表征技术进行表征，并用作超级电容器的电极。451 和 1292 F g-1 的比电容值分别从 MnCo2O4.5 和 MWCNT@MnCo2O4.5 在 1 A g-1 下获得。此外，基于 MWCNT@MnCo2O4.5//AC 的器件在 0.5 A g-1 的电流密度下在 362.5 W kg-1 的功率密度下显示出更高的能量密度值 33 W hkg-1。通过为十二个发光二极管、一个数字手表和一个电机风扇供电，对该设备的实际电子应用进行了测试。从 MnCo2O4.5 与 MWCNTs 的结果来看，MnCo2O4。