Low-temperature and template-free fabrication of cobalt oxide acicular nanotube arrays and their applications in supercapacitors

Chung Wei Kung, Yu Heng Cheng, Chuan Ming Tseng, Li Yao Chou, Kuo Chuan Ho

研究成果: Article同行評審

13 引文 斯高帕斯(Scopus)

摘要

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).

原文English
頁(從 - 到)4042-4048
頁數7
期刊Journal of Materials Chemistry A
3
發行號7
DOIs
出版狀態Published - 2015 2月 21

All Science Journal Classification (ASJC) codes

  • 一般化學
  • 可再生能源、永續發展與環境
  • 一般材料科學

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