Facile controlled synthesis of MnO2 nanostructures of novel shapes and their application in batteries
Facile controlled synthesis of MnO2 nanostructures of novel shapes and their application in batteries
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DOI：
10.1021/ic051715b
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发表时间：
2006-03-06
影响因子：
4.6
通讯作者：
Shen, PW
中科院分区：
文献类型：
--
作者：
Cheng, FY;Zhao, JZ;Shen, PW
In this paper, MnO2 nanomaterials of different crystallographic types and crystal morphologies have been selectively synthesized via a facile hydrothermal route and electrochemically investigated as the cathode active materials of primary and rechargeable batteries. beta-MnO2 nano/microstructures, including one-dimensional (1-D) nanowires, nanorods, and nanoneedles, as well as 2-D hexagramlike and dendritelike hierarchical forms, were obtained by simple hydrothermal decomposition of an Mn(NO3)(2) solution under controlled reaction conditions. alpha- and gamma-MnO2 nanowires and nanorods were also prepared on the basis of previous literature. The as-synthesized samples were characterized by instrumental analyses such as XRD, SEM, TEM, and HRTEM. Furthermore, the obtained 1-D alpha- gamma-MnO2 nanostructures were found to exhibit favorable discharge performance in both primary alkaline ZnMnO2 cells and rechargeable Li-MnO2 cells, showing their potential applications in high-energy batteries.
