Abstract
Layered cobalt carbonate hydroxide (LCCH) acicular nanorod arrays (ANRAs) grown on a graphite substrate are converted to Co3O4 acicular nanotube arrays (ANTAs) via the anion-exchange reaction and Kirkendall effect at low temperature. The Co3O4 ANTAs exhibit an area capacitance of 369 mF cm-2 and a specific capacitance of 979 F g-1 at 2.5 mA cm-2, which are much higher than those of the Co3O4 ANRAs prepared by calcining the LCCH ANRAs at 350 °C (64.5 mF cm-2 and 191 F g-1).
Original language | English |
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Pages (from-to) | 4042-4048 |
Number of pages | 7 |
Journal | Journal of Materials Chemistry A |
Volume | 3 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2015 Feb 21 |
All Science Journal Classification (ASJC) codes
- General Chemistry
- Renewable Energy, Sustainability and the Environment
- General Materials Science