纳米四氧化三锰温和水相合成及其电容性能

采用温和水相合成法制备出纳米Mn3O4，采用X射线衍射（XRD）、电子能谱（XPS）及透射电子显微镜（TEM）等技术手段对其结构、组成与形貌进行了研究分析；并利用循环伏安（CV）及充放电等电化学测试研究了纳米Mn3O4的电容性能。 结果表明，本实验所制备的纳米Mn3O4为四方相γ-Mn3O4，其粒径大小为40~60 nm；该材料具有良好的电容性能，其比电容值可达270 F/g，且经1000次循环后，其比电容值可达原来的85%。

Mild Aqueous Synthesis and the Capacitance Performance of Nano Manganous Manganic Oxide

A simple approach to the synthesis of highly dispersed nano-Mn3O by mild aqueous synthesis method at low temperatures(90 ℃) is reported. The structure, composition and morphology of the material were investigated by X-ray diffraction, X-ray photoelectron spectroscopy and transmission electron microscope. The capacitance performance of the composites was explained by cyclic voltammetry and charge-discharge tests. The results show that the sample is tetragonal γ-Mn3O4 with 40~60 nm in diameter. The nano-Mn3O4 material has a good capacitance performance. The specific capacitance value of the material is 270 F/g. Furthermore, the specific capacitance value remains 85% of its initial value after 1000 charge-discharge circles.