Hierarchical and Multifunctional Three-dimensional Network of Carbon Nanotubes for Supercapacitor and Strain Sensor Applications
Technical Report,13 Jun 2012,12 Jun 2015
Hanyang University Seoul
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A coaxial carbon nanotubemanganese oxide material 3DNCMnO2 was fabricated by coating manganese oxide on silicon pillar array assisted three-dimensional network of carbon nanotubes 3DNC, which could be used as an electrode for supercapacitors. The 3DNC provides not only a conductive framework for deposition of MnO2, but also sufficient voids for ionic diffusion, which are benefit for the electrochemical performance. Compared with the CNTsMnO2 on bared silicon substrates 2DNCMnO2, the 3DNCMnO2 showed better specific capacitance and cycling stability. When the loading time of MnO2 was 3 min, the specific capacitance of 3DNCMnO2 at the scan rate of 10 mVs could be 294 Fg. The chargedischarge cycle stability was shown with 96 specific capacitance retention even after 2000 chargedischarge cycles at 100 mVs scan rate.