Facile Synthesis of Novel Nanostructured MnO2 Thin Films and Their Application in Supercapacitors

被引：73

作者：

Xia, H. ^{[1
]}

Xiao, W. ^{[1
]}

Lai, M. O. ^{[1
]}

Lu, L. ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Mech Engn, Singapore 117576, Singapore

来源：

NANOSCALE RESEARCH LETTERS | 2009年 / 4卷 / 09期

关键词：

Supercapacitor; MnO2; Nanostructure; Thin film; Cyclic voltammetry; LOW-TEMPERATURE SYNTHESIS; MANGANESE OXIDE; HYDROTHERMAL SYNTHESIS; PSEUDOCAPACITANCE PROPERTIES; HOLLOW URCHINS; ALPHA-MNO2; ELECTRODEPOSITION; NANOWIRES; BATTERIES; SPHERES;

D O I：

10.1007/s11671-009-9352-4

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nanostructured alpha-MnO2 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 MnO2 is controlled by synthesis temperature. The capacitive behavior of the MnO2 thin films with different morphologies are studied by cyclic voltammetry. The alpha-MnO2 thin films composed of dandelion-like spheres exhibit high specific capacitance, good rate capability, and excellent long-term cycling stability.

引用

页码：1035 / 1040

页数：6

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