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摘要
In this work, MnOx nanomaterials with different crystallographic types and crystal morphologies (i.e., one-dimensional alpha-MnO2 nanotubes, multiple branched gamma-MnOOH nanorods and mixed-valent MnOx nanoflowers) have been fabricated from MnO2 nanoparticles via hydrothermally fine-tuning solution media without any template or surfactant. Interestingly, multiple branched gamma-MnOOH nanorods present optimized charge storage performance as supercapacitor electrodes, delivering a high specific capacitance of 226 F g(-1) and excellent rate ability. This improved capacitive behavior of gamma-MnOOH can be attributed to its large surface area, crystalline nature and typical morphology. In principle, this facile synthetic strategy could be useful to explore different crystal phases and morphologies of metal oxides nanostructure in electrochemical applications.
- 出版日期2013-2
- 单位重庆大学
