Photo-electrocatalytic H2 evolution on poly(2,2′-bithiophene) at neutral pH

Chun Hin Ng*, Orawan Winther-Jensen, Bartlomiej Kolodziejczyk, C. André Ohlin, Bjorn Winther Jensen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


Vapour phase polymerised (VPP) polybithiophene (PBTh) on glassy carbon is revealed to be an efficient photo-electrocatalytic electrode for the hydrogen evolution reaction (HER). An onset potential of-0.03 V vs SCE for the HER is observed on illumination using visible light in 0.1 mol L-1 phosphate buffer at pH 6.9, 600 mV lower in energy than E. Hydrogen evolution is confirmed using gas chromatography with a calculated faradaic efficiency of 34% when holding at a potential of-0.5 V. Importantly, this process occurs without platinum and under neutral aqueous conditions thus revealing a significant but overlooked application for PBTh: a potential low-cost cathode material for the splitting of water.

Original languageEnglish
Pages (from-to)18230-18234
Number of pages5
JournalInternational Journal of Hydrogen Energy
Issue number32
Publication statusPublished - 2014 Oct 31
Externally publishedYes


  • Conducting polymer
  • Hydrogen
  • Photo-electrocatalyst
  • Polythiophene
  • Renewable energy

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology


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