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Electrodeposition of manganese dioxide film on activated carbon paper and its application in supercapacitors with high rate capability

机译:活性炭纸上二氧化锰薄膜的电沉积及其在高倍率超级电容器中的应用

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摘要

In this research magnesium dioxide (MnO2) is electrodeposited over activated carbon paper (ACP) to form a composited MnO2/ACP material. The as-prepared MnO2/ACP shows excellent capacitance performance with a high specific capacitance of 485.4 F g(-1) calculated from a discharge curve with current density 2.0 A g(-1), owing to its enlarged specific surface area and improved electronic conductivity. Moreover, the MnO2/ACP possesses remarkable rate capability due to the easy access of electrolytic ions, leading to complete utilization of MnO2 active material for supercapacitors. To summarize, the electrodeposition of MnO2 thin film on activated carbon paper is reported for the first time, and the composited MnO2/ACP is a promising electrode material for building up efficient supercapacitors.
机译:在这项研究中,将二氧化镁(MnO2)电沉积在活性炭纸(ACP)上以形成MnO2 / ACP复合材料。所制备的MnO2 / ACP由于具有更大的比表面积和改善的电子性能,因此具有出色的电容性能,根据电流密度为2.0 A g(-1)的放电曲线计算得出的比电容为485.4 F g(-1),具有很高的比电容。电导率。此外,由于容易进入电解离子,MnO2 / ACP具有显着的倍率性能,从而使MnO2活性材料完全用于超级电容器。综上所述,首次报道了活性炭纸上MnO2薄膜的电沉积,而MnO2 / ACP复合材料是用于构建高效超级电容器的有希望的电极材料。

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