Durability testing of photoelectrochemical hydrogen production under day/night light cycled conditions

Dowon Bae, Brian Seger, Peter Christian Kjærgaard Vesborg, Ole Hansen, Ib Chorkendorff*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

151 Downloads (Pure)

Abstract

This work investigates long-term photoelectrochemical hydrogen evolution (82 days) in 1 M HClO4 using a TiO2:H protected crystalline Si-based photocathode with metal-oxide-semiconductor (MOS) junctions. It is shown that day/night cycling leads to relatively rapid performance degradation while photocurrent under the continuous light condition is relatively stable. We observed that the performance loss is mainly due to contamination of catalytic surface with carbonaceous material. By ultraviolet (UV) light exposure, we also observed that the activity can be restored likely owing to the photocatalytic degradation of organics on the TiO2 protection layer.
Original languageEnglish
JournalChemElectroChem
Volume6
Issue number1
Pages (from-to)106-109
Number of pages4
ISSN2196-0216
DOIs
Publication statusPublished - 2019

Keywords

  • Energy conversion
  • Hydrogen evolution reaction
  • PECs
  • Titanium oxide
  • Water splitting

Fingerprint Dive into the research topics of 'Durability testing of photoelectrochemical hydrogen production under day/night light cycled conditions'. Together they form a unique fingerprint.

Cite this