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Design of 2D Layered Catalyst by Coherent Heteroepitaxial Conversion for Robust Hydrogen Generation

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Title
Design of 2D Layered Catalyst by Coherent Heteroepitaxial Conversion for Robust Hydrogen Generation
Author(s)
Yeoseon Sim; Aram Yoon; Hee Seong Kang; Jinsung Kwak; Se-Yang, Kim; Yongsu Jo; Daeseong Choe; Woongki Na; Min Hee Lee; Soon-Dong Park; Seunguk Song; Daeyong Kim; Jung-Woo Yoo; Sung Youb Kim; Hyeonsik Cheong; Jae Sung Lee; Chul-Ho Lee; Zonghoon Lee; Soon-Yong Kwon
Publication Date
2021-02
Journal
Advanced Functional Materials, v.31, no.9
Publisher
John Wiley & Sons Ltd.
Abstract
© 2020 Wiley-VCH GmbHThe structural engineering of 2D layered materials is emerging as a powerful strategy to design catalysts for high-performance hydrogen evolution reaction (HER). However, the ultimate test of this technology under typical operating settings lies in the reduced performance and the shortened lifespan of these catalysts. Here, a novel approach is proposed to design efficient and robust HER catalysts through out-of-plane deformation of 2D heterojunction using metal-organic chemical vapor deposition. High-yield, single-crystalline WTe2 nanobelts are used as an epitaxial template for their coherent conversion to WS2. During the conversion process, the WTe2/WS2 heterostructure containing both lateral and vertical junctions are achieved by coherent heteroepitaxial stacking despite differences in symmetry. The lattice coherency drives out-of-plane deformation of heteroepitaxially grown WS2. The increase in the effective surface area and decrease in the electron-transfer resistance across the 2D heterojunctions in turn enhances the HER performance as well as the long-term durability of these electrocatalysts.
URI
https://pr.ibs.re.kr/handle/8788114/9965
DOI
10.1002/adfm.202005449
ISSN
1616-301X
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > 1. Journal Papers (저널논문)
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