Durability Testing of Photoelectrochemical Hydrogen Production under Day/Night Light Cycled Conditions

Dowon Bae, Brian Seger, Ole Hansen, Peter C. K. Vesborg, Ib Chorkendorff

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

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 the photocurrent under the continuous light condition is relatively stable. We observed that the performance loss is mainly due to contamination of the catalytically active surface with carbonaceous material. By ultraviolet (UV) light exposure, we also observed that the activity can be restored, most likely due to photocatalytic degradation of organic compounds by the UV light excited TiO2 protection layer.

Original languageEnglish
Pages (from-to)106-109
Number of pages4
JournalChemElectroChem
Volume6
Issue number1
Early online date25 Aug 2018
DOIs
Publication statusPublished - 2 Jan 2019

Keywords

  • energy conversion
  • hydrogen evolution reaction
  • PECs
  • titanium oxide
  • water splitting

ASJC Scopus subject areas

  • Catalysis
  • Electrochemistry

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