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

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

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)515-524
Number of pages10
JournalJournal of the Chinese Institute of Chemical Engineers
Volume30
Issue number6
Publication statusPublished - 1999 Nov 1

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Platinum
Nickel
Methanol
Oxidation
Leaching
Hydroxyl Radical
Cyclic voltammetry
Oxygen
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

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title = "Voltammetric investigation of nickel-platinum codeposits for methanol oxidation in KOH solutions",
abstract = "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.",
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Voltammetric investigation of nickel-platinum codeposits for methanol oxidation in KOH solutions. / Wen, Ten-Chin; Hu, Che Hao; Hu, Chi Chang.

In: Journal of the Chinese Institute of Chemical Engineers, Vol. 30, No. 6, 01.11.1999, p. 515-524.

Research output: Contribution to journalArticle

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AB - 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.

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