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

Journal article (2019)

Authors

D. Bae ChemE/Materials for Energy Conversion and Storage - AS , Technical University of Denmark
Brian Seger Technical University of Denmark
Ole Hansen Technical University of Denmark
Peter C.K. Vesborg Technical University of Denmark
Ib Chorkendorff Technical University of Denmark
Research Group
ChemE/Materials for Energy Conversion and Storage (AS) (TU Delft)
Copyright: © 2019 D. Bae, Brian Seger, Ole Hansen, Peter C.K. Vesborg, Ib Chorkendorff
DOI
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https://doi.org/10.1002/celc.201800918
Energy conversion Water splitting Hydrogen evolution reaction PECs Titanium oxide
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Published Date

2019

Language

English

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Faculty

Applied Sciences

Department

ChemE/Chemical Engineering

Research Group

ChemE/Materials for Energy Conversion and Storage

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.