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나노 구조 물리 연구단
나노구조물리 연구단
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Hybrid catalyst with monoclinic MoTe2 and platinum for efficient hydrogen evolution

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Title
Hybrid catalyst with monoclinic MoTe2 and platinum for efficient hydrogen evolution
Author(s)
Jinbong Seok; Jun-Ho Lee; Dongyeon Bae; Byungdo Ji; Young-Woo Son; Young Hee Lee; Heejun Yang; Suyeon Cho
Publication Date
2019-07
Journal
APL MATERIALS, v.7, no.7, pp.071118 -
Publisher
AMER INST PHYSICS
Abstract
© 2019 Author(s).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
URI
https://pr.ibs.re.kr/handle/8788114/6135
ISSN
2166-532X
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
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