Bipolar TiO2/Pt semiconductor photoelectrodes and multielectrode arrays for unassisted photolytic water splitting

Eugene Smotkin, Allen J. Bard, Alan Campion, Marye A. Fox, Thomas E. Mallouk, Stephen E. Webber, J. M. White

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46 Scopus citations

Abstract

Bipolar TiO2/Pt photoelectrodes were fabricated by anodization of thin Ti foils onto which Pt had been previously sputter-deposited. These photoelectrodes are capable of a vectorial charge transfer. Current-potential curves were used to predict the behavior of multielectrode arrays. Several different multielectrode cells, utilizing KOH, O2 electrolytes, were constructed. In series configuration, the open-circuit voltage Voc is proportional to the number of panels used. With five panels in series, a Voc in excess of 3.6 V is obtained, permitting unassisted photolytic (Xe lamp) water splitting to produce H2 and O2.

Original languageEnglish (US)
Pages (from-to)4604-4607
Number of pages4
JournalJournal of physical chemistry
Volume90
Issue number19
StatePublished - Dec 1 1986

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physical and Theoretical Chemistry

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