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Hybrid catalyst with monoclinic MoTe2 and platinum for efficient hydrogen evolution

Title
Hybrid catalyst with monoclinic MoTe2 and platinum for efficient hydrogen evolution
Authors
Seok J.Lee J.-H.Bae D.Ji B.Son Y.-W.Lee Y.H.Yang H.Cho S.
Ewha Authors
조수연
SCOPUS Author ID
조수연scopus
Issue Date
2019
Journal Title
APL Materials
ISSN
2166-532XJCR Link
Citation
APL Materials vol. 7, no. 7
Publisher
American Institute of Physics Inc.
Indexed
SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
Transition metal dichalcogenides (TMDs) are considered as promising catalysts for the hydrogen evolution reaction (HER) owing to their abundant active sites such as atomic vacancies and step edges. Moreover, TMDs have polymorphism, which has stimulated extensive studies on tuning of surface electronic structures for an active HER. The polymorphism in TMDs provides an opportunity for new hybrid catalysts with TMDs and other catalytic metals via surface engineering that can create a novel functional surface of the catalytic electrode for the active HER. Here, we report a hybrid catalyst with monoclinic MoTe2 and platinum (Pt) for the HER. Pt atoms were chemically bound to the surface of monoclinic MoTe2 that has an atomically distorted lattice structure, which produces a distinct Pt-Te alloy layer. The Pt/MoTe2 hybrid catalyst exhibits an active HER with a Tafel slope of 22 mV per decade and an exchange current density of 1.0 mA/cm2, which are the best values among those reported for TMD-based catalysts. The use of minimum amount of Pt on atomically distorted metallic TMDs realizes rich catalytic active sites on large basal planes for efficient hydrogen production. © 2019 Author(s).
DOI
10.1063/1.5094957
Appears in Collections:
엘텍공과대학 > 화학신소재공학전공 > Journal papers
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