Nanostructured Na-doped vanadium oxide synthesized using an anodic deposition technique for supercapacitor applications

Chun Hung Lai, Chung Kwei Lin, Sheng Wei Lee, Hui Ying Li, Jeng Kuei Chang, Ming Jay Deng

研究成果: 雜誌貢獻文章同行評審

24 引文 斯高帕斯(Scopus)

摘要

Vanadium-based oxides are prepared on graphite substrates by an anodic deposition technique. The plating bath is 0.2 M VOSO 4 solution with NaCH 3COO addition. A scanning electron microscope and an X-ray diffractometer are used to characterize the deposits; the analyses indicate that the porous Na-doped V 2O 5 electrodes with a nano-crystalline nature are obtained. Supercapacitor properties of the oxide electrodes are studied using cyclic voltammetry in KCl aqueous electrolyte. The data show that the deposited oxides can exhibit ideal capacitive behavior over a potential range of 1 V; the optimum specific capacitance is ∼180 F/g. A lower deposition potential leads to a higher porosity of the oxide, resulting in a better high-rate supercapacitor performance of the electrode.
原文英語
期刊Journal of Alloys and Compounds
536
發行號SUPPL.1
DOIs
出版狀態已發佈 - 九月 25 2012
對外發佈Yes

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys

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