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Ternary molybdenum disulfide nanosheets-cobalt oxide nanocubes-platinum composite as efficient electrocatalyst for hydrogen evolution reaction

A high-performance ternary composite electrocatalyst, consisting of a molybdenum disulfide-cobalt oxide-platinum (Mo–Co–Pt) composite is synthesized by facile hydrothermal methods and then used as an electrocatalyst for hydrogen evolution reaction (HER). The ternary composite of Mo–Co–Pt is characte...

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Main Authors: Zainal, Siti Nuraqidah, Sookhakian, Mehran, Woi, Pei Meng, Alias, Yatimah
Format: Article
Published: Elsevier 2020
Subjects:
Q Science (General)
QC Physics
QD Chemistry
Online Access:http://eprints.um.edu.my/24577/
https://doi.org/10.1016/j.electacta.2020.136255
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spelling my.um.eprints.245772020-06-03T03:13:13Z http://eprints.um.edu.my/24577/ Ternary molybdenum disulfide nanosheets-cobalt oxide nanocubes-platinum composite as efficient electrocatalyst for hydrogen evolution reaction Zainal, Siti Nuraqidah Sookhakian, Mehran Woi, Pei Meng Alias, Yatimah Q Science (General) QC Physics QD Chemistry A high-performance ternary composite electrocatalyst, consisting of a molybdenum disulfide-cobalt oxide-platinum (Mo–Co–Pt) composite is synthesized by facile hydrothermal methods and then used as an electrocatalyst for hydrogen evolution reaction (HER). The ternary composite of Mo–Co–Pt is characterized using transmission electron microscopy, X-ray photoelectron spectroscopy, Raman spectroscopy, and linear sweep voltammetry. The as-synthesized Mo–Co–Pt-modified glassy carbon electrode shows better electrocatalytic performance than that of pure molybdenum disulfide (MoS2) nanosheets and cobalt oxide (Co3O4) nanocubes. Besides, the ternary composite electrode exhibits Pt-like performance along with the smallest Tafel slope and superior electrocatalytic stability in an acidic medium. Based on BET specific surface area and electrochemical impedance spectroscopy measurements, the MoS2 nanosheets and Pt nanoparticles enhance HER activity of the Co3O4 nanocubes in the ternary composite due to the synergistic effect between the two-dimensional structure and large surface area of MoS2 nanosheets and excellent electrocatalytic activity of the Pt nanoparticles. © 2020 Elsevier Ltd Elsevier 2020 Article PeerReviewed Zainal, Siti Nuraqidah and Sookhakian, Mehran and Woi, Pei Meng and Alias, Yatimah (2020) Ternary molybdenum disulfide nanosheets-cobalt oxide nanocubes-platinum composite as efficient electrocatalyst for hydrogen evolution reaction. Electrochimica Acta, 345. p. 136255. ISSN 0013-4686 https://doi.org/10.1016/j.electacta.2020.136255 doi:10.1016/j.electacta.2020.136255
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
QC Physics
QD Chemistry
spellingShingle Q Science (General)
QC Physics
QD Chemistry
Zainal, Siti Nuraqidah
Sookhakian, Mehran
Woi, Pei Meng
Alias, Yatimah
Ternary molybdenum disulfide nanosheets-cobalt oxide nanocubes-platinum composite as efficient electrocatalyst for hydrogen evolution reaction
description A high-performance ternary composite electrocatalyst, consisting of a molybdenum disulfide-cobalt oxide-platinum (Mo–Co–Pt) composite is synthesized by facile hydrothermal methods and then used as an electrocatalyst for hydrogen evolution reaction (HER). The ternary composite of Mo–Co–Pt is characterized using transmission electron microscopy, X-ray photoelectron spectroscopy, Raman spectroscopy, and linear sweep voltammetry. The as-synthesized Mo–Co–Pt-modified glassy carbon electrode shows better electrocatalytic performance than that of pure molybdenum disulfide (MoS2) nanosheets and cobalt oxide (Co3O4) nanocubes. Besides, the ternary composite electrode exhibits Pt-like performance along with the smallest Tafel slope and superior electrocatalytic stability in an acidic medium. Based on BET specific surface area and electrochemical impedance spectroscopy measurements, the MoS2 nanosheets and Pt nanoparticles enhance HER activity of the Co3O4 nanocubes in the ternary composite due to the synergistic effect between the two-dimensional structure and large surface area of MoS2 nanosheets and excellent electrocatalytic activity of the Pt nanoparticles. © 2020 Elsevier Ltd
format Article
author Zainal, Siti Nuraqidah
Sookhakian, Mehran
Woi, Pei Meng
Alias, Yatimah
author_facet Zainal, Siti Nuraqidah
Sookhakian, Mehran
Woi, Pei Meng
Alias, Yatimah
author_sort Zainal, Siti Nuraqidah
title Ternary molybdenum disulfide nanosheets-cobalt oxide nanocubes-platinum composite as efficient electrocatalyst for hydrogen evolution reaction
title_short Ternary molybdenum disulfide nanosheets-cobalt oxide nanocubes-platinum composite as efficient electrocatalyst for hydrogen evolution reaction
title_full Ternary molybdenum disulfide nanosheets-cobalt oxide nanocubes-platinum composite as efficient electrocatalyst for hydrogen evolution reaction
title_fullStr Ternary molybdenum disulfide nanosheets-cobalt oxide nanocubes-platinum composite as efficient electrocatalyst for hydrogen evolution reaction
title_full_unstemmed Ternary molybdenum disulfide nanosheets-cobalt oxide nanocubes-platinum composite as efficient electrocatalyst for hydrogen evolution reaction
title_sort ternary molybdenum disulfide nanosheets-cobalt oxide nanocubes-platinum composite as efficient electrocatalyst for hydrogen evolution reaction
publisher Elsevier
publishDate 2020
url http://eprints.um.edu.my/24577/
https://doi.org/10.1016/j.electacta.2020.136255
_version_ 1669008006115753984
score 13.211869

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