Synthesis of MoSx/Ni-metal-organic framework-74 composites as efficient electrocatalysts for hydrogen evolution reactions
- Authors
- Do, Ha Huu; Le, Quyet Van; Nguyen, Tuan Van; Huynh, Kim Anh; Tekalgne, Mahider Asmare; Tran, Vy Anh; Lee, Tae Hyung; Cho, Jin Hyuk; Shokouhimehr, Mohammadreza; Ahn, Sang Hyun; Jang, Ho Won; Kim, Soo Young
- Issue Date
- 5월-2021
- Publisher
- WILEY
- Keywords
- electrocatalyst; hydrogen evolution reaction; metal& #8208; organic framework
- Citation
- INTERNATIONAL JOURNAL OF ENERGY RESEARCH, v.45, no.6, pp.9638 - 9647
- Indexed
- SCIE
SCOPUS
- Journal Title
- INTERNATIONAL JOURNAL OF ENERGY RESEARCH
- Volume
- 45
- Number
- 6
- Start Page
- 9638
- End Page
- 9647
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/128085
- DOI
- 10.1002/er.6385
- ISSN
- 0363-907X
- Abstract
- The development of low-cost and stable materials presents a challenging task for the electrocatalytic hydrogen evolution reaction (HER). In this work, we developed a facile strategy to fabricate efficient catalysts by incorporating amorphous molybdenum sulfide (MoSx) and Ni-metal-organic framework (MOF)-74 via a solvothermal process. Owing to the formation of NiMoS phases that decrease the hydrogen adsorption energy on the catalysts, the MoSx/Ni-MOF-74 based catalysts deliver excellent hydrogen generation performance in acidic media. In particular, an optimal MoSx/Ni-MOF-74 with an amount of 40 wt% MoSx exhibited the best HER performance with a low onset voltage of -114 mV and a small Tafel slope of 53.1 mV dec(-1). In addition, the stability of the catalyst was maintained for over 2000 cycles with a slight shift in performance. These results imply that the MoSx/Ni-MOF-74 composite is a promising candidate for the development of non-expensive catalysts for hydrogen production using the electrochemical method.
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