Abstract
It is the first report that the uniformly dispersed nickel oxide nanoparticles were synthesized on the substrates of multi-walled carbon nanotubes (MWNT) via electrochemical technique. The morphology and chemical state of the NiOx/MWNTcomposite were characterized using scanning electron microscopy and X-ray photoelectron spectroscopy. The electrochemical test results revealed that the surface-decorated composite with oxide particle sizes of 15-30nm can deliver specific capacitance about 190 F g-1, tenfold greater than that of pure MWNT. Meanwhile, the electrode displayed excellent cycling stability with nearly 100% coulombic efficiency over 1000 cycles and good rate capability with acceptable specific capacitance fading, indicating that this novel nanostructured composite electrode was a promising candidate for electrochemical capacitors.
| Original language | English |
|---|---|
| Pages (from-to) | 8-11 |
| Number of pages | 4 |
| Journal | Materials Chemistry and Physics |
| Volume | 131 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - Dec 15 2011 |
| Externally published | Yes |
Funding
This work was supported by the National Natural Science Foundation of China ( 50954005, 51074011 ), the National Basic Research Program of China (973 Program) ( 2007CB936502 ), and the National 863 Program ( 2006AA03Z230, 2008AA03Z208 ).
| Funders | Funder number |
|---|---|
| National Natural Science Foundation of China | 50954005, 51074011 |
| National High-tech Research and Development Program | 2006AA03Z230, 2008AA03Z208 |
| National Key Research and Development Program of China | 2007CB936502 |
Keywords
- Composite materials
- Electrochemical techniques
- Microporous materials
- Nanostructures