Journal
ACS APPLIED NANO MATERIALS
Volume 5, Issue 2, Pages -Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.1c03977
Keywords
MoS2; dendrites; HER; fractal dimension; nanostructures
Funding
- National Defense Technology Innovation Special Zone Project
- National Natural Science Foundation of China [51402342]
- Science and Technology Commission of Shanghai Municipality [20501130200]
Ask authors/readers for more resources
This study found that monolayer MoS2 grown under non-thermodynamic equilibrium conditions exhibits excellent electro-catalytic performance for hydrogen evolution reaction (HER), with dendritic edge nanostructures providing higher catalytic site densities than triangular samples synthesized under thermodynamic equilibrium conditions.
The edge of the 2H-MoS2 phase has good electro-catalytic behavior for hydrogen evolution reaction (HER). However, the shape of monolayer MoS2 synthesized under thermodynamic equilibrium conditions is triangular, which limits the density of catalytic sites at the edge of a crystal domain. The morphology of the edge of monolayer MoS2 grown under non-thermodynamic equili-brium conditions will show a large number of dendrite nanostructures. The abundant dendrite edge nanostructures make it have more catalytic site densities than monolayer MoS2 synthesized under thermodynamic equilibrium conditions. The relationship between MoO3 source supply and MoS2 fractal dimension was established through the simulation of fractal dimension. HER performance showed that the Tafel slope (59 mV/Dec) of dendrite monolayer MoS2 was much lower than that of the triangular sample (97 mV/Dec), which confirmed that the dendrite MoS2 monolayer was more conducive to the of evolution reaction.
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