Metal-organic framework-derived MoSx composites as efficient electrocatalysts for hydrogen evolution reaction
- Authors
- Do, Ha Huu; Quyet Van Le; Tekalgne, Mahider Asmare; Anh Vy Tran; Lee, Tae Hyung; Hong, Sung Hyun; Han, Sang Mok; Ahn, Sang Hyun; Kim, Young Ju; Jang, Ho Won; Kim, Soo Young
- Issue Date
- 25-1월-2021
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Metal-organic framework; Hydrogen evolution reaction; Electrocatalyst; MoSx
- Citation
- JOURNAL OF ALLOYS AND COMPOUNDS, v.852
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF ALLOYS AND COMPOUNDS
- Volume
- 852
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/50066
- DOI
- 10.1016/j.jallcom.2020.156952
- ISSN
- 0925-8388
- Abstract
- Metal-organic frameworks (MOFs) have emerged as a class of crystalline porous material for energy-related applications. Many MOF-based materials are efficient catalysts for hydrogen evolution reactions (HERs). Herein, we illustrate a strategy to modify Co-based MOFs into amorphous molybdenum sulfide (MoSx) via a facial solvothermal method. The modification gives rise to CoMoS phases that reduce hydrogen adsorption energy of catalysts. As a result, MoSx substantially improves the catalytic activity of Co-based MOF for HERs. An optimal sample with 40% MoSx delivered the best HER performance with a low onset potential of -147 mV and a Tafel slope of similar to 68 mV decade(-1). Furthermore, the composite catalyst was stable for up to 1000 cycles without any changes in performance. These results suggest that the MoSx/Co-MOF-74 composite is a viable candidate for replacing noble metals as a high-performance catalyst for HER in the future. (C) 2020 Elsevier B.V. All rights reserved.
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Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
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