Xia H, Xiao W, Lai M O, Lu L
Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, 117576 Singapore.
Nanoscale Res Lett. 2009 Jun 2;4(9):1035-1040. doi: 10.1007/s11671-009-9352-4.
Nanostructured alpha-MnO(2) thin films with different morphologies are grown on the platinum substrates by a facile solution method without any assistance of template or surfactant. Microstructural characterization reveals that morphology evolution from dandelion-like spheres to nanoflakes of the as-grown MnO(2) is controlled by synthesis temperature. The capacitive behavior of the MnO(2) thin films with different morphologies are studied by cyclic voltammetry. The alpha-MnO(2) thin films composed of dandelion-like spheres exhibit high specific capacitance, good rate capability, and excellent long-term cycling stability.
通过一种简便的溶液法，在没有任何模板或表面活性剂辅助的情况下，在铂基底上生长出具有不同形貌的纳米结构α-MnO₂薄膜。微观结构表征表明，生长的MnO₂从蒲公英状球体到纳米薄片的形貌演变受合成温度控制。通过循环伏安法研究了不同形貌的MnO₂薄膜的电容行为。由蒲公英状球体组成的α-MnO₂薄膜表现出高比电容、良好的倍率性能和优异的长期循环稳定性。
