Metal–organic framework-derived MoSx composites as efficient electrocatalysts for hydrogen evolution reaction
- Authors
- Do, H.H.; Le, Q.V.; Tekalgne, M.A.; Tran, A.V.; Lee, T.H.; Hong, S.H.; Han, S.M.; Ahn, Sang Hyun; Kim, Y.J.; Jang, H.W.; Kim, S.Y.
- Issue Date
- 25-Jan-2021
- Publisher
- Elsevier Ltd
- Keywords
- Electrocatalyst; Hydrogen evolution reaction; Metal–organic framework; MoSx
- Citation
- Journal of Alloys and Compounds, v.852
- Journal Title
- Journal of Alloys and Compounds
- Volume
- 852
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/43440
- DOI
- 10.1016/j.jallcom.2020.156952
- ISSN
- 0925-8388
1873-4669
- 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 ∼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. © 2020 Elsevier B.V.
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Collections - College of Engineering > School of Chemical Engineering and Material Science > 1. Journal Articles
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