Photoelectrochemical tandem cell with bipolar dye-sensitized electrodes for vectorial electron transfer for water splitting

Jong Hyeok Park, Allen J. Bard

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Direct water electrolysis was achieved with a novel monolithic photoelectrochemical cell. Bipolar WO 3/Pt and dye-sensitized TiO 2/Pt semiconductor panels, capable of vectorial electron transfer, have been used for water splitting to yield hydrogen and oxygen; light is the only energy input. The hydrogen production efficiency of this tandem cell, based on the short-circuit current, was ∼1.9% and the maximum hydrogen production efficiency was ∼2.5% when 0.2 V positive bias was applied. When a concentrated LiCl aqueous solution was used as an electrolyte, valuable chlorine was obtained instead of oxygen. The maximum yielding efficiency of hydrogen and chlorine was ∼1.8%.

Original languageEnglish
Pages (from-to)E5-E8
JournalElectrochemical and Solid-State Letters
Issue number2
Publication statusPublished - 2006 Apr 10


All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

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