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Oxygen evolution on tantalum-polypyrrole-platinum anodes

Nature, ISSN: 0028-0836, Vol: 295, Issue: 5850, Page: 578-580
1982
  • 30
    Citations
  • 0
    Usage
  • 13
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    30
    • Citation Indexes
      30
  • Captures
    13

Article Description

Electrically conducting polymer films of polypyrrole were previously reported to provide greatly enhanced stability against the photodegradation of semiconductor photoanodes in electrochemical photovoltaic cells. To determine the feasibility of protecting photoanodes with polypyrrole in photoelectrolysis cells where O is evolved some basic questions had to be answered. To achieve this we have performed experiments using polypyrrole films as protective coatings on Ta metal electrodes; Ta is known to form insulating oxides that prevent O evolution from aqueous solution. We found that polypyrrole is stable in the presence of O; that while polypyrrole itself is a poor electrocatalyst for O evolution, metal catalysts can be deposited on its surface to enhance O evolution; and that Ta-polypyrrole-Pt electrode structures are electrochemically indistinguishable from naked Pt electrodes with respect to O evolution. © 1982 Nature Publishing Group.

Bibliographic Details

Gerald Cooper; Arthur J. Frank; Arthur J. Nozik; Rommel Noufi

Springer Science and Business Media LLC

Multidisciplinary

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