期刊
ACS APPLIED MATERIALS & INTERFACES
卷 8, 期 12, 页码 7748-7755出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b07575
关键词
photoelectrochemical hydrogen production; zinc telluride; molybdenum sulfide; carbon protection layer; photocathode
资金
- Brain Korea Plus Program of the Ministry of Education, Korean Center for Artificial Photosynthesis - MISIP [NRF-2011-C1AAA0001-2011-0030278]
- MOTIE of the Republic of Korea [10050509]
- Ulsan National Institute of Science and Technology (UNIST)
A zinc telluride (ZnTe) film modified with MoS2 and carbon has been studied as a new photocathode for solar hydrogen production from photoelectrochemical (PEC) water splitting. The modification enhances PEC activity and stability of the photocathode. Thus, the MoS2/C/ZnTe/ZnO electrode exhibits highly improved activity of -1.48 mA cm(-2) at 0 V-RHE with a positively shifted onset potential up to 0.3 V-RHE relative to bare ZnO/ZnTe electrode (-0.19 mA cm(-2), 0.18 V-RHE) under the simulated 1 sun illumination. This represents the highest value ever reported for ZnTe-based electrodes in PEC water splitting. The carbon densely covers the surface of ZnTe to protect it against photocorrosion in aqueous electrolyte and improves charge separation. In addition, MoS2 further enhances the PEC performance as a hydrogen evolution co-catalyst.
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