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

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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

Cite this

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title = "Durability testing of photoelectrochemical hydrogen production under day/night light cycled conditions",
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.",
keywords = "Energy conversion, Hydrogen evolution reaction, PECs, Titanium oxide, Water splitting",
author = "Dowon Bae and Brian Seger and Vesborg, {Peter Christian Kj{\ae}rgaard} and Ole Hansen and Ib Chorkendorff",
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doi = "10.1002/celc.201800918",
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Durability testing of photoelectrochemical hydrogen production under day/night light cycled conditions. / Bae, Dowon; Seger, Brian; Vesborg, Peter Christian Kjærgaard; Hansen, Ole; Chorkendorff, Ib.

In: ChemElectroChem, Vol. 6, No. 1, 2019, p. 106-109.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Durability testing of photoelectrochemical hydrogen production under day/night light cycled conditions

AU - Bae, Dowon

AU - Seger, Brian

AU - Vesborg, Peter Christian Kjærgaard

AU - Hansen, Ole

AU - Chorkendorff, Ib

PY - 2019

Y1 - 2019

N2 - 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.

AB - 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.

KW - Energy conversion

KW - Hydrogen evolution reaction

KW - PECs

KW - Titanium oxide

KW - Water splitting

U2 - 10.1002/celc.201800918

DO - 10.1002/celc.201800918

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SN - 2196-0216

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