Hierarchical and Multifunctional Three-dimensional Network of Carbon Nanotubes for Supercapacitor and Strain Sensor Applications
Abstract
A coaxial carbon nanotube/manganese oxide material (3DNC/MnO2) 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 CNTs/MnO2 on bared silicon substrates (2DNC/MnO2), the 3DNC/MnO2 showed better specific capacitance and cycling stability. When the loading time of MnO2 was 3 min, the specific capacitance of 3DNC/MnO2 at the scan rate of 10 mV/s could be 294 F/g. The chargedischarge cycle stability was shown with 96 specific capacitance retention even after 2000 chargedischarge cycles at 100 mV/s scan rate.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 19, 2016
- Accession Number
- AD1017131
Entities
People
- Haiwon Lee
Organizations
- Hanyang University