dc.contributor.author |
Zheng, Haitao
|
|
dc.contributor.author |
Modibedi, Mmalewane
|
|
dc.date.accessioned |
2024-02-07T10:37:23Z |
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dc.date.available |
2024-02-07T10:37:23Z |
|
dc.date.issued |
2023-09 |
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dc.identifier.citation |
Zheng, H. & Modibedi, M. 2023. The thermal kinetics of methanol oxidation on Pt/MWCNT electrocatalysts in alkaline media. <i>Advanced Materials Science and Technology, 5(1).</i> http://hdl.handle.net/10204/13596 |
en_ZA |
dc.identifier.issn |
2717-526X |
|
dc.identifier.issn |
2810-9155 |
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dc.identifier.uri |
https://doi.org/10.37155/2717-526X-0501-7
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|
dc.identifier.uri |
http://hdl.handle.net/10204/13596
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|
dc.description.abstract |
In this study, the thermal electrooxidation of methanol on a Pt/MWCNT catalyst was examined in alkaline media across the temperature range of 298-363 K. The investigation utilized cyclic voltammetry (CV), quasi-state polarization, and electrochemical impedance spectroscopy (EIS) methods to explore the kinetics of the methanol electrooxidation reaction (MEOR). At elevated temperatures, the kinetics of methanol electrooxidation on the Pt/MWCNT catalyst within an alkaline solution (1.0 mol/L KOH) were notably accelerated compared to room temperature. This acceleration can be attributed to the reduced methanol dehydrogenation reaction at relatively low temperatures. The Tafel slopes experienced changes as the temperature increased. These variations in Tafel slopes are likely linked to alterations in the rate-determining step of the MEOR as a function of temperature. The EIS outcomes revealed a decrease in charge-transfer resistance as temperature increased. This phenomenon is associated with the interplay between interfacial and diffusion impedances, as well as the surface roughness of the highly dispersed electrode surface. |
en_US |
dc.format |
Fulltext |
en_US |
dc.language.iso |
en |
en_US |
dc.relation.uri |
http://ojs.omniscient.sg/index.php/amst/issue/view/386 |
en_US |
dc.relation.uri |
http://ojs.omniscient.sg/index.php/amst/article/view/21211/22241 |
en_US |
dc.source |
Advanced Materials Science and Technology, 5(1) |
en_US |
dc.subject |
Electro-oxidation of methanol |
en_US |
dc.subject |
Pd/MWCNT |
en_US |
dc.subject |
Catalyst |
en_US |
dc.subject |
Alkaline media |
en_US |
dc.subject |
Temperature |
en_US |
dc.title |
The thermal kinetics of methanol oxidation on Pt/MWCNT electrocatalysts in alkaline media |
en_US |
dc.type |
Article |
en_US |
dc.description.pages |
9 |
en_US |
dc.description.note |
© The Author(s) 2023. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, adaptation, distribution and reproduction in any medium or format, for any purpose, even commercially, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
en_US |
dc.description.cluster |
Smart Places |
en_US |
dc.description.impactarea |
Electrochemical Energy |
en_US |
dc.identifier.apacitation |
Zheng, H., & Modibedi, M. (2023). The thermal kinetics of methanol oxidation on Pt/MWCNT electrocatalysts in alkaline media. <i>Advanced Materials Science and Technology, 5(1)</i>, http://hdl.handle.net/10204/13596 |
en_ZA |
dc.identifier.chicagocitation |
Zheng, Haitao, and Mmalewane Modibedi "The thermal kinetics of methanol oxidation on Pt/MWCNT electrocatalysts in alkaline media." <i>Advanced Materials Science and Technology, 5(1)</i> (2023) http://hdl.handle.net/10204/13596 |
en_ZA |
dc.identifier.vancouvercitation |
Zheng H, Modibedi M. The thermal kinetics of methanol oxidation on Pt/MWCNT electrocatalysts in alkaline media. Advanced Materials Science and Technology, 5(1). 2023; http://hdl.handle.net/10204/13596. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Zheng, Haitao
AU - Modibedi, Mmalewane
AB - In this study, the thermal electrooxidation of methanol on a Pt/MWCNT catalyst was examined in alkaline media across the temperature range of 298-363 K. The investigation utilized cyclic voltammetry (CV), quasi-state polarization, and electrochemical impedance spectroscopy (EIS) methods to explore the kinetics of the methanol electrooxidation reaction (MEOR). At elevated temperatures, the kinetics of methanol electrooxidation on the Pt/MWCNT catalyst within an alkaline solution (1.0 mol/L KOH) were notably accelerated compared to room temperature. This acceleration can be attributed to the reduced methanol dehydrogenation reaction at relatively low temperatures. The Tafel slopes experienced changes as the temperature increased. These variations in Tafel slopes are likely linked to alterations in the rate-determining step of the MEOR as a function of temperature. The EIS outcomes revealed a decrease in charge-transfer resistance as temperature increased. This phenomenon is associated with the interplay between interfacial and diffusion impedances, as well as the surface roughness of the highly dispersed electrode surface.
DA - 2023-09
DB - ResearchSpace
DP - CSIR
J1 - Advanced Materials Science and Technology, 5(1)
KW - Electro-oxidation of methanol
KW - Pd/MWCNT
KW - Catalyst
KW - Alkaline media
KW - Temperature
LK - https://researchspace.csir.co.za
PY - 2023
SM - 2717-526X
SM - 2810-9155
T1 - The thermal kinetics of methanol oxidation on Pt/MWCNT electrocatalysts in alkaline media
TI - The thermal kinetics of methanol oxidation on Pt/MWCNT electrocatalysts in alkaline media
UR - http://hdl.handle.net/10204/13596
ER -
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en_ZA |
dc.identifier.worklist |
27219 |
en_US |