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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Ying, Yulong Gu, Lin Liu, Yu Mao, Yiyin Wang, Yewu Peng, Xinsheng |
| Copyright Year | 2013 |
| Abstract | CuO nanosheets (NSs)/reduced graphene oxide (rGO) hybrid lamellar films were prepared by vacuum filtration of CuO NSs/GO composite dispersions, followed by hydrothermal reduction. The CuO NSs/GO composite dispersions were assembled electrostatically by mixing a negatively charged GO sheets aqueous solution with a positively charged CuO NSs aqueous dispersion at room temperature. The prepared CuO NSs/rGO hybrid lamellar films exhibited a specific capacitance of 163.7 F g−1, which is much higher than the 69.7 F g−1 of CuO NSs and 66.0 F g−1 of rGO. The effective specific capacitance was 82.5 F g−1 after 1000 cycles, which was more than two times the 32.7 F g−1 of CuO NSs electrodes. The synergistic redox activity of the CuO NSs, in combination with the high electronic conductivity of the rGO and the unique CuO NSs spaced sandwich-like porous structures, dominated the excellent capacitance of CuO NSs/rGO hybrid lamellar films. The sandwiched, lamellar, porous structures not only provide plenty of paths for electrolyte-ion access to the CuO NSs but also expose the rGO sheets to the electrolyte as much as possible. This process provides a potential way to synthesise metal oxide/GO composite electrodes for capacitors. |
| Starting Page | 9134 |
| Ending Page | 9140 |
| Page Count | 7 |
| File Format | HTM / HTML PDF |
| ISSN | 20403364 |
| Volume Number | 5 |
| Issue Number | 19 |
| Journal | Nanoscale |
| DOI | 10.1039/c3nr02737f |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Copper(II) oxide Hydrothermal circulation Electrolyte Graphene Redox Capacitance London dispersion force |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nanoscience and Nanotechnology |
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