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

被引:27
作者
Bae, Dowon [1 ,3 ]
Seger, Brian [1 ]
Hansen, Ole [1 ,2 ]
Vesborg, Peter C. K. [1 ]
Chorkendorff, Ib [1 ]
机构
[1] Tech Univ Denmark, Surface Phys & Catalysis SurfCat, Dept Phys, Fysikvej B311, DK-2800 Lyngby, Denmark
[2] Tech Univ Denmark, Dept Micro & Nanotechnol, Orsteds Plads B344, DK-2800 Lyngby, Denmark
[3] Delft Univ Technol, MECS, Dept Chem Engn, Delft, Netherlands
关键词
energy conversion; hydrogen evolution reaction; PECs; titanium oxide; water splitting; SI PHOTOCATHODE; TIO2; NANOTUBES; EVOLUTION; CORROSION;
D O I
10.1002/celc.201800918
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
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.
引用
收藏
页码:106 / 109
页数:4
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