Fan Hui-Li, Ran Fen, Zhang Xuan-Xuan, Song Hai-Ming, Niu Xiao-Qin, Kong Ling-Bin, Kang Long
2School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050 People's Republic of China.
1State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou, 730050 People's Republic of China.
Nanomicro Lett. 2015;7(1):59-67. doi: 10.1007/s40820-014-0019-z. Epub 2014 Nov 14.
This article reported the electrochemical behaviors of a novel hollow carbon microspheres/manganese dioxide nanosheets (micro-HC/nano-MnO) composite prepared by an in situ self-limiting deposition method under hydrothermal condition. The results of scanning electron microscopy reveal that MnO nanosheets homogeneously grow onto the surface of micro-HC to form a loose-packed microstructure. The quantity of MnO required in the electrode layer has thereby been reduced significantly, and higher specific capacitances have been achieved. The micro-HC/nano-MnO electrode presents a high capacitance of 239.0 F g at a current density of 5 mA cm, which is a strong promise for high-rate electrochemical capacitive energy storage applications.
本文报道了通过水热条件下的原位自限沉积法制备的新型中空碳微球/二氧化锰纳米片（micro-HC/nano-MnO）复合材料的电化学行为。扫描电子显微镜结果表明，MnO纳米片均匀地生长在micro-HC表面，形成疏松堆积的微观结构。由此，电极层中所需的MnO量显著减少，并实现了更高的比电容。在5 mA cm的电流密度下，micro-HC/nano-MnO电极呈现出239.0 F g的高电容，这对于高速率电化学电容储能应用具有很大的前景。
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