Cooperative electrocatalytic effect of Pd and Ce alloys nanoparticles in PdCe@CNWs electrode for oxygen evolution reaction (OER)
Electrocatalytic water oxidation is an ecofriendly and intelligent approach for oxygen evolution from water because it requires only water and electrical potential/energy as inputs. However, the oxygen evolution reaction (OER) is the most challenging multi-electron and proton transfer reaction durin...
Saved in:
Main Authors: | , , , , , |
---|---|
Format: | Article |
Published: |
Elsevier B.V.
2022
|
Subjects: | |
Online Access: | http://eprints.utm.my/103321/ http://dx.doi.org/10.1016/j.mcat.2022.112255 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
my.utm.103321 |
---|---|
record_format |
eprints |
spelling |
my.utm.1033212023-10-31T02:37:51Z http://eprints.utm.my/103321/ Cooperative electrocatalytic effect of Pd and Ce alloys nanoparticles in PdCe@CNWs electrode for oxygen evolution reaction (OER) Ghouri, Zafar Khan Elsaid, Khaled Nasef, Mohamed Mahmoud Ahmed, Shakil Badreldin, Ahmed Abdel Wahab, Ahmed Q Science (General) TP Chemical technology Electrocatalytic water oxidation is an ecofriendly and intelligent approach for oxygen evolution from water because it requires only water and electrical potential/energy as inputs. However, the oxygen evolution reaction (OER) is the most challenging multi-electron and proton transfer reaction during water electrolysis for hydrogen production. The electrocatalyst is the critical component that controls the efficiency of oxygen evolution. Therefore, it is essential to explore efficient and durable electrocatalysts that must have significant efficiency compared to the benchmark catalyst (i.e., RuO2) for OER. Herein, self-supported carbon nanowires (CNWs) decorated with bimetallic palladium-cerium PdCe alloys nanoparticles (NPs) were synthesized through an electrospinning-thermal carbonation approach to overcome the kinetic barriers and deliver decent alkaline OER activity. As a result, the PdCe/CNWs requires a low overpotential of ∼360 and ∼450 mV vs. RHE to deliver the current density of 10 and 50 mA/cm2 with low Tafel slope (62 mV/dec) for OER, which is even comparable to the benchmark, RuO2 (360 mV and 73 mV/ dec). Notably, only a slight increase (∼ 10 %) in overpotential was observed after 10,000 cycles indicating high electrocatalyst stability. The high stability and improved OER performance of the PdCe/CNWs electrode can be explained by the cooperative catalytic influence between Pd, Ce, and C species. Elsevier B.V. 2022-04 Article PeerReviewed Ghouri, Zafar Khan and Elsaid, Khaled and Nasef, Mohamed Mahmoud and Ahmed, Shakil and Badreldin, Ahmed and Abdel Wahab, Ahmed (2022) Cooperative electrocatalytic effect of Pd and Ce alloys nanoparticles in PdCe@CNWs electrode for oxygen evolution reaction (OER). Molecular Catalysis, 522 (NA). pp. 1-9. ISSN 2468-8231 http://dx.doi.org/10.1016/j.mcat.2022.112255 DOI:10.1016/j.mcat.2022.112255 |
institution |
Universiti Teknologi Malaysia |
building |
UTM Library |
collection |
Institutional Repository |
continent |
Asia |
country |
Malaysia |
content_provider |
Universiti Teknologi Malaysia |
content_source |
UTM Institutional Repository |
url_provider |
http://eprints.utm.my/ |
topic |
Q Science (General) TP Chemical technology |
spellingShingle |
Q Science (General) TP Chemical technology Ghouri, Zafar Khan Elsaid, Khaled Nasef, Mohamed Mahmoud Ahmed, Shakil Badreldin, Ahmed Abdel Wahab, Ahmed Cooperative electrocatalytic effect of Pd and Ce alloys nanoparticles in PdCe@CNWs electrode for oxygen evolution reaction (OER) |
description |
Electrocatalytic water oxidation is an ecofriendly and intelligent approach for oxygen evolution from water because it requires only water and electrical potential/energy as inputs. However, the oxygen evolution reaction (OER) is the most challenging multi-electron and proton transfer reaction during water electrolysis for hydrogen production. The electrocatalyst is the critical component that controls the efficiency of oxygen evolution. Therefore, it is essential to explore efficient and durable electrocatalysts that must have significant efficiency compared to the benchmark catalyst (i.e., RuO2) for OER. Herein, self-supported carbon nanowires (CNWs) decorated with bimetallic palladium-cerium PdCe alloys nanoparticles (NPs) were synthesized through an electrospinning-thermal carbonation approach to overcome the kinetic barriers and deliver decent alkaline OER activity. As a result, the PdCe/CNWs requires a low overpotential of ∼360 and ∼450 mV vs. RHE to deliver the current density of 10 and 50 mA/cm2 with low Tafel slope (62 mV/dec) for OER, which is even comparable to the benchmark, RuO2 (360 mV and 73 mV/ dec). Notably, only a slight increase (∼ 10 %) in overpotential was observed after 10,000 cycles indicating high electrocatalyst stability. The high stability and improved OER performance of the PdCe/CNWs electrode can be explained by the cooperative catalytic influence between Pd, Ce, and C species. |
format |
Article |
author |
Ghouri, Zafar Khan Elsaid, Khaled Nasef, Mohamed Mahmoud Ahmed, Shakil Badreldin, Ahmed Abdel Wahab, Ahmed |
author_facet |
Ghouri, Zafar Khan Elsaid, Khaled Nasef, Mohamed Mahmoud Ahmed, Shakil Badreldin, Ahmed Abdel Wahab, Ahmed |
author_sort |
Ghouri, Zafar Khan |
title |
Cooperative electrocatalytic effect of Pd and Ce alloys nanoparticles in PdCe@CNWs electrode for oxygen evolution reaction (OER) |
title_short |
Cooperative electrocatalytic effect of Pd and Ce alloys nanoparticles in PdCe@CNWs electrode for oxygen evolution reaction (OER) |
title_full |
Cooperative electrocatalytic effect of Pd and Ce alloys nanoparticles in PdCe@CNWs electrode for oxygen evolution reaction (OER) |
title_fullStr |
Cooperative electrocatalytic effect of Pd and Ce alloys nanoparticles in PdCe@CNWs electrode for oxygen evolution reaction (OER) |
title_full_unstemmed |
Cooperative electrocatalytic effect of Pd and Ce alloys nanoparticles in PdCe@CNWs electrode for oxygen evolution reaction (OER) |
title_sort |
cooperative electrocatalytic effect of pd and ce alloys nanoparticles in pdce@cnws electrode for oxygen evolution reaction (oer) |
publisher |
Elsevier B.V. |
publishDate |
2022 |
url |
http://eprints.utm.my/103321/ http://dx.doi.org/10.1016/j.mcat.2022.112255 |
_version_ |
1781777678987165696 |
score |
13.160551 |