We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Promoted Catalytic Activity of CoS<sub>x</sub>@MoS<sub>x</sub>/MoO<sub>x</sub> Supported on Carbon Papers for Electrocatalytic Hydrogen Evolution Reaction.
- Authors
Hong, Sung Hyun; Tekalgne, Mahider Asmare; Ryu, Sangwoo; Ahn, Sang Hyun; Kim, Soo Young
- Abstract
Developing cost-effective and stable materials for the electrocatalysis of hydrogen evolution reaction (HER) remains challenging. In this study, efficient catalysts for HER were synthesized by integrating the cobalt and molybdenum oxides via electrodeposition, followed by subsequent sulfurization of the as-prepared oxides using chemical vapor deposition (CVD). This methodology allowed the incorporation of both cobalt and molybdenum components into the catalyst in a single step. The as-synthesized CoSx@MoSx/MoOx-based catalysts exhibited excellent hydrogen production performance in acidic media owing to the presence of Co-S and Mo-S bonds in the hybrid structure. Particularly, CoSx@MoSx/MoOx(90@360) and MoSx@CoOx(180@180) displayed the best HER performances with low overpotentials of 80 mV and 150 mV, respectively. The catalysts were highly stable, with their stability preserved for over 1000 cycles with marginal reduction in overall efficiency. Therefore, these findings suggest the potential of CoSx@MoSx/MoOx and MoSx@CoOx composites as ideal candidates for developing low-cost catalysts for electrochemical hydrogen production.
- Subjects
CATALYTIC activity; CARBON paper; CHEMICAL vapor deposition; MOLYBDENUM oxides; HYDROGEN production; ELECTROCATALYSIS; MOLYBDENUM catalysts; COBALT; HYDROGEN evolution reactions
- Publication
International Journal of Energy Research, 2024, Vol 2024, p1
- ISSN
0363-907X
- Publication type
Article
- DOI
10.1155/2024/5532630