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Hybridisation of cobalt phosphide-molybdenum disulfide nanostructures towards enhanced electrocatalytic performance

Efficient electrocatalysts of cobalt phosphide (CoP)-molybdenum disulfide (MoS2) nanostructures were prepared by hydrothermal method with various CoP: MoS2 ratios (1:1, 2:1, and 1:2) to investigate the effect of CoP-MoS2 hybridisation for hydrogen evolution reaction (HER). The crystal structures of...

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Main Authors: Haslinda Mohd Sidek, Hwang, Seong-Ju
Format: Proceedings
Language:English
English
Published: Pusat e-pembelajaran, UMS 2023
Subjects:
Q1-295 General
T1-995 Technology (General)
Online Access:https://eprints.ums.edu.my/id/eprint/41328/1/ABSTRACT.pdf
https://eprints.ums.edu.my/id/eprint/41328/2/FULL%20TEXT.pdf
https://eprints.ums.edu.my/id/eprint/41328/
https://oer.ums.edu.my/handle/oer_source_files/2781
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spelling my.ums.eprints.413282024-10-14T02:32:07Z https://eprints.ums.edu.my/id/eprint/41328/ Hybridisation of cobalt phosphide-molybdenum disulfide nanostructures towards enhanced electrocatalytic performance Haslinda Mohd Sidek Hwang, Seong-Ju Q1-295 General T1-995 Technology (General) Efficient electrocatalysts of cobalt phosphide (CoP)-molybdenum disulfide (MoS2) nanostructures were prepared by hydrothermal method with various CoP: MoS2 ratios (1:1, 2:1, and 1:2) to investigate the effect of CoP-MoS2 hybridisation for hydrogen evolution reaction (HER). The crystal structures of the prepared nanostructures were analysed by using X-ray diffraction (XRD) analysis, while morphological studies were conducted via Field Emission-Scanning Electron Microscopy (FE-SEM) and Transmission Electron Microscopy (TEM). The electrocatalytic performance of the resulting composites was evaluated under both acidic and alkaline conditions. XRD pattern commonly shows the Bragg reflections of CoP and MoS2 phases, indicating the presence of both phases in the resulting nanostructures. The materials also exhibit distinct morphologies, with rod-like CoP nanoparticles of ~50 nm in diameter and a distribution of MoS2 spheres on the surface of CoP nanorods. The formation of CoP-MoS2 composite nanostructures led to higher HER electrocatalytic activity in acidic condition, with an overpotential of 181 mV, which was lower than those of pristine CoP (209 mV) and MoS2 (275 mV). Similarly, the HER activity under alkaline condition also showed a smaller overpotential of 238 mV compared to that of pristine CoP (493 mV) and MoS2 (634 mV). These results highlight the beneficial effect of hybridisation of CoP and MoS2 in enhancing electrocatalytic performance, primarily attributed to the synergistic effect between both species. Pusat e-pembelajaran, UMS 2023 Proceedings PeerReviewed text en https://eprints.ums.edu.my/id/eprint/41328/1/ABSTRACT.pdf text en https://eprints.ums.edu.my/id/eprint/41328/2/FULL%20TEXT.pdf Haslinda Mohd Sidek and Hwang, Seong-Ju (2023) Hybridisation of cobalt phosphide-molybdenum disulfide nanostructures towards enhanced electrocatalytic performance. https://oer.ums.edu.my/handle/oer_source_files/2781
institution Universiti Malaysia Sabah
building UMS Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sabah
content_source UMS Institutional Repository
url_provider http://eprints.ums.edu.my/
language English
English
topic Q1-295 General
T1-995 Technology (General)
spellingShingle Q1-295 General
T1-995 Technology (General)
Haslinda Mohd Sidek
Hwang, Seong-Ju
Hybridisation of cobalt phosphide-molybdenum disulfide nanostructures towards enhanced electrocatalytic performance
description Efficient electrocatalysts of cobalt phosphide (CoP)-molybdenum disulfide (MoS2) nanostructures were prepared by hydrothermal method with various CoP: MoS2 ratios (1:1, 2:1, and 1:2) to investigate the effect of CoP-MoS2 hybridisation for hydrogen evolution reaction (HER). The crystal structures of the prepared nanostructures were analysed by using X-ray diffraction (XRD) analysis, while morphological studies were conducted via Field Emission-Scanning Electron Microscopy (FE-SEM) and Transmission Electron Microscopy (TEM). The electrocatalytic performance of the resulting composites was evaluated under both acidic and alkaline conditions. XRD pattern commonly shows the Bragg reflections of CoP and MoS2 phases, indicating the presence of both phases in the resulting nanostructures. The materials also exhibit distinct morphologies, with rod-like CoP nanoparticles of ~50 nm in diameter and a distribution of MoS2 spheres on the surface of CoP nanorods. The formation of CoP-MoS2 composite nanostructures led to higher HER electrocatalytic activity in acidic condition, with an overpotential of 181 mV, which was lower than those of pristine CoP (209 mV) and MoS2 (275 mV). Similarly, the HER activity under alkaline condition also showed a smaller overpotential of 238 mV compared to that of pristine CoP (493 mV) and MoS2 (634 mV). These results highlight the beneficial effect of hybridisation of CoP and MoS2 in enhancing electrocatalytic performance, primarily attributed to the synergistic effect between both species.
format Proceedings
author Haslinda Mohd Sidek
Hwang, Seong-Ju
author_facet Haslinda Mohd Sidek
Hwang, Seong-Ju
author_sort Haslinda Mohd Sidek
title Hybridisation of cobalt phosphide-molybdenum disulfide nanostructures towards enhanced electrocatalytic performance
title_short Hybridisation of cobalt phosphide-molybdenum disulfide nanostructures towards enhanced electrocatalytic performance
title_full Hybridisation of cobalt phosphide-molybdenum disulfide nanostructures towards enhanced electrocatalytic performance
title_fullStr Hybridisation of cobalt phosphide-molybdenum disulfide nanostructures towards enhanced electrocatalytic performance
title_full_unstemmed Hybridisation of cobalt phosphide-molybdenum disulfide nanostructures towards enhanced electrocatalytic performance
title_sort hybridisation of cobalt phosphide-molybdenum disulfide nanostructures towards enhanced electrocatalytic performance
publisher Pusat e-pembelajaran, UMS
publishDate 2023
url https://eprints.ums.edu.my/id/eprint/41328/1/ABSTRACT.pdf
https://eprints.ums.edu.my/id/eprint/41328/2/FULL%20TEXT.pdf
https://eprints.ums.edu.my/id/eprint/41328/
https://oer.ums.edu.my/handle/oer_source_files/2781
_version_ 1814049451205984256
score 13.211869

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