The Redox Behavior of Electroless Ni/PTFE Deposits in KOH

Ten Chin Wen, Chi Chang Hu, Yat June Li

研究成果: Article

29 引文 斯高帕斯(Scopus)

摘要

The Ni(II) and higher valence states redox behavior of Ni and Ni/PTFE deposited electrodes fabricated by electroless plating are compared using cyclic voltammetry and potentiodynamic techniques, for their ability to evolve O2 and oxidize ethanol in 1 mol dm-3KOH. In this study, a Ni/PTFE electrode formed in a 6 g dm-3 polytetrafluoroethylene (PTFE) containing plating bath demonstrates the highest activity. An examination of the surface morphology of this Ni/PTFE deposit demonstrates that the highest activity of this electrode is not caused by the enhanced surface area of the Ni/PTFE electrode. The presence of PTFE in a Ni electrode alters the formation pathway of ϒ-phase Ni hydrous oxide. Gamma-phase Ni hydrous oxide catalyzes O2 evolution, while an intermediate species/structure between p-NiOOH and ϒ-NiO2 is responsible for the oxidation of ethanol.

原文English
頁(從 - 到)2554-2558
頁數5
期刊Journal of the Electrochemical Society
140
發行號9
DOIs
出版狀態Published - 1993 九月

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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