School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.
Nanoscale Res Lett. 2013 Dec 19;8(1):535. doi: 10.1186/1556-276X-8-535.
Mn3O4/Ni foam composites were synthesized by a one-step hydrothermal method in an aqueous solution containing only Mn(NO3)2 and C6H12N4. It was found that Mn3O4 nanorods with lengths of 2 to 3 μm and diameters of 100 nm distributed on Ni foam homogeneously. Detailed reaction time-dependent morphological and component evolution was studied to understand the growth process of Mn3O4 nanorods. As cathode material for supercapacitors, Mn3O4 nanorods/composite exhibited superior supercapacitor performances with high specific capacitance (263 F · g-1 at 1A · g-1), which was more than 10 times higher than that of the Mn3O4/Ni plate. The enhanced supercapacitor performance was due to the porous architecture of the Ni foam which provides fast ion and electron transfer, large reaction surface area, and good conductivity.
通过在仅包含 Mn(NO3)2 和 C6H12N4 的水溶液中一步水热法合成了 Mn3O4/Ni 泡沫复合材料。结果发现，Mn3O4 纳米棒均匀地分布在 Ni 泡沫上，长度为 2 至 3 μm，直径为 100 nm。详细研究了反应时间依赖性的形态和组成演变，以了解 Mn3O4 纳米棒的生长过程。作为超级电容器的阴极材料，Mn3O4 纳米棒/复合材料表现出优异的超级电容器性能，具有高比电容（在 1A·g-1 时为 263 F·g-1），比 Mn3O4/Ni 板高 10 倍以上。增强的超级电容器性能归因于 Ni 泡沫的多孔结构，其提供了快速的离子和电子转移、大的反应表面积和良好的导电性。
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