Voltammetric investigation of nickel-platinum codeposits for methanol oxidation in KOH solutions

Ten-Chin Wen, Che Hao Hu, Chi Chang Hu

研究成果: Article同行評審

10 引文 斯高帕斯(Scopus)

摘要

The electrochemical and electrocatalytic properties of Ni-Pt codeposits for methanol oxidation in an alkaline medium were characterized by cyclic voltammetry. The Ni-Pt codeposit with ca. Pt 60 a/o was found to exhibit the maximal activity for the oxidation of methanol in the low potential range. The electrocatalytic activity of all Ni-Pt codeposits (before and after leaching) for methanol oxidation was found to depend on their original compositions/textural properties before leaching. The hydroxyl Pt(IV) species with a higher hydrated property possessed a higher activity for the methanol oxidation and oxygen evolution reactions (OER). The presence of a hydroxyplatinum intermediate, Pt(OH)(ads), was proposed to be responsible for the anodic peaks of methanol oxidation in the less positive potential region on both positive and negative sweeps.

原文English
頁(從 - 到)515-524
頁數10
期刊Journal of the Chinese Institute of Chemical Engineers
30
發行號6
出版狀態Published - 1999 十一月 1

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 化學工程 (全部)

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