Journal
NANO RESEARCH
Volume 11, Issue 9, Pages 4587-4598Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-018-2040-x
Keywords
nanosheets; electrocatalyst; Ti plate; hydrogen evolution
Categories
Funding
- Fundamental Research Funds for the Central Universities [16CX05016A]
- Shandong Provincial Natural Science Foundation, China [ZR2017QB015]
- National Natural Science Foundation of China [51402362, 21471160]
- Taishan Scholar Project
Ask authors/readers for more resources
Few-layered MoSe2 nanosheets with mixed 1T/2H phase were successfully arrayed on a Ti substrate (forming 1T@2H-MoSe2/Ti) through a facile one-step solvothermal process. After testing different synthesis conditions, it was found that the optimal process involves a temperature of 200 degrees C and a reaction time of 12 h. Structural characterizations reveal that the morphology of 1T@2H-MoSe2 consists of edge-terminated nanosheets with one to five layers, composed of a mixed 1T/2H phase dominated by the 1T one. The 1T@2H-MoSe2/Ti electrode shows excellent HER catalytic activity, with a small onset potential (-120 mV vs. reversible hydrogen electrode, RHE) and an electrode potential of only -133 mV (vs. RHE) to achieve a current density of 20 mA.cm(-2). This excellent electrocatalytic activity is due to the synergistic effects of 1T metallic phase, few-layered nanosheet morphology, and direct growth of 1T@2H-MoSe2 on the Ti substrate. In addition, the 1T@2H-MoSe2/Ti electrode shows excellent stability towards long-term electrolysis. This is due to the long-term stability of the valence states of Mo and Se, as shown by post-electrolysis X-ray photoelectron spectroscopy analysis.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available