Staff View: Unveiling the role of K2NiF4-Structure Pr4Ni3O10+� surface coverage in boosting oxygen permeation and suppressing membrane degradation

Unveiling the role of K2NiF4-Structure Pr4Ni3O10+� surface coverage in boosting oxygen permeation and suppressing membrane degradation

To probe the oxygen flux over an extended period of 1000 h, oxygen permeation measurements are performed at 700 �C for La0.6Sr0.4Co0.2Fe0.8O3-� (LSCF) coated with K2NiF4-structure Pr4Ni3O10+� (PNO) while varying surface coverage. The optimization of PNO surface coverage, thickness, and porosity over...

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Main Authors:	Saher S., Tan C.Y., Ramesh S., Yap B.K., Ong B.H., Mo K.H., Al-Furjan M.S.H.
Other Authors:	36134688200
Format:	Article
Published:	Elsevier B.V. 2025
Subjects:	Electrolytic reduction Iron compounds Lanthanum compounds Manganese compounds Nickel compounds Nozzles Oxygen Solid oxide fuel cells (SOFC) Strontium compounds Ultrasonic effects Membrane degradation Optimisations Oxygen fluxes Oxygen permeation Permeation measurements Phase segregations SOFC cathode Surface coverages Surface porosity Ultrasonic-vibration Coatings
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spelling	my.uniten.dspace-368512025-03-03T15:45:11Z Unveiling the role of K2NiF4-Structure Pr4Ni3O10+� surface coverage in boosting oxygen permeation and suppressing membrane degradation Saher S. Tan C.Y. Ramesh S. Yap B.K. Ong B.H. Mo K.H. Al-Furjan M.S.H. 36134688200 16029485400 41061958200 26649255900 7102342460 55915884700 57888381600 Electrolytic reduction Iron compounds Lanthanum compounds Manganese compounds Nickel compounds Nozzles Oxygen Solid oxide fuel cells (SOFC) Strontium compounds Ultrasonic effects Membrane degradation Optimisations Oxygen fluxes Oxygen permeation Permeation measurements Phase segregations SOFC cathode Surface coverages Surface porosity Ultrasonic-vibration Coatings To probe the oxygen flux over an extended period of 1000 h, oxygen permeation measurements are performed at 700 �C for La0.6Sr0.4Co0.2Fe0.8O3-� (LSCF) coated with K2NiF4-structure Pr4Ni3O10+� (PNO) while varying surface coverage. The optimization of PNO surface coverage, thickness, and porosity over LSCF involves the application of ultrasonic vibration of the nozzle chamber within the range of 40 kHz to 180 kHz. This is coupled with the adjustment of the gap between the nozzle exit and substrate surface, ranging from 2 cm to 9 cm. The results indicate that the PNO coating facilitated an increase in oxygen permeation and hindered the formation of secondary phases on the surface, known to cause degradation over time. When compared to bare LSCF, a minimal increase of 8 % in oxygen permeation is observed for the coated sample with a PNO loading content of 7.21 �m, denoted as PNO1. Conversely, the most significant enhancement of 74 % is seen for the loading content of 5.06 �m, referred to as PNO5. The LSCF membrane experiences a degradation of oxygen flux by 11 % after prolonged operation, significantly surpassing the mere 2.1 % degradation observed for the best-performing PNO5 membrane. This improvement is achieved by suppressing the segregated phases of SrO and CoFe2O4 on the surface. The observed enhancement in oxygen flux is attributed to the optimal surface coverage of the PNO-coated particulate, which increases the number of active sites for the oxygen reduction reaction (ORR). ? 2023 Final 2025-03-03T07:45:11Z 2025-03-03T07:45:11Z 2024 Article 10.1016/j.seppur.2023.125515 2-s2.0-85175242642 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85175242642&doi=10.1016%2fj.seppur.2023.125515&partnerID=40&md5=1a3ce7c76c5922b70840cb19f849fa98 https://irepository.uniten.edu.my/handle/123456789/36851 330 125515 Elsevier B.V. Scopus
institution	Universiti Tenaga Nasional
building	UNITEN Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Tenaga Nasional
content_source	UNITEN Institutional Repository
url_provider	http://dspace.uniten.edu.my/
topic	Electrolytic reduction Iron compounds Lanthanum compounds Manganese compounds Nickel compounds Nozzles Oxygen Solid oxide fuel cells (SOFC) Strontium compounds Ultrasonic effects Membrane degradation Optimisations Oxygen fluxes Oxygen permeation Permeation measurements Phase segregations SOFC cathode Surface coverages Surface porosity Ultrasonic-vibration Coatings
spellingShingle	Electrolytic reduction Iron compounds Lanthanum compounds Manganese compounds Nickel compounds Nozzles Oxygen Solid oxide fuel cells (SOFC) Strontium compounds Ultrasonic effects Membrane degradation Optimisations Oxygen fluxes Oxygen permeation Permeation measurements Phase segregations SOFC cathode Surface coverages Surface porosity Ultrasonic-vibration Coatings Saher S. Tan C.Y. Ramesh S. Yap B.K. Ong B.H. Mo K.H. Al-Furjan M.S.H. Unveiling the role of K2NiF4-Structure Pr4Ni3O10+� surface coverage in boosting oxygen permeation and suppressing membrane degradation
description	To probe the oxygen flux over an extended period of 1000 h, oxygen permeation measurements are performed at 700 �C for La0.6Sr0.4Co0.2Fe0.8O3-� (LSCF) coated with K2NiF4-structure Pr4Ni3O10+� (PNO) while varying surface coverage. The optimization of PNO surface coverage, thickness, and porosity over LSCF involves the application of ultrasonic vibration of the nozzle chamber within the range of 40 kHz to 180 kHz. This is coupled with the adjustment of the gap between the nozzle exit and substrate surface, ranging from 2 cm to 9 cm. The results indicate that the PNO coating facilitated an increase in oxygen permeation and hindered the formation of secondary phases on the surface, known to cause degradation over time. When compared to bare LSCF, a minimal increase of 8 % in oxygen permeation is observed for the coated sample with a PNO loading content of 7.21 �m, denoted as PNO1. Conversely, the most significant enhancement of 74 % is seen for the loading content of 5.06 �m, referred to as PNO5. The LSCF membrane experiences a degradation of oxygen flux by 11 % after prolonged operation, significantly surpassing the mere 2.1 % degradation observed for the best-performing PNO5 membrane. This improvement is achieved by suppressing the segregated phases of SrO and CoFe2O4 on the surface. The observed enhancement in oxygen flux is attributed to the optimal surface coverage of the PNO-coated particulate, which increases the number of active sites for the oxygen reduction reaction (ORR). ? 2023
author2	36134688200
author_facet	36134688200 Saher S. Tan C.Y. Ramesh S. Yap B.K. Ong B.H. Mo K.H. Al-Furjan M.S.H.
format	Article
author	Saher S. Tan C.Y. Ramesh S. Yap B.K. Ong B.H. Mo K.H. Al-Furjan M.S.H.
author_sort	Saher S.
title	Unveiling the role of K2NiF4-Structure Pr4Ni3O10+� surface coverage in boosting oxygen permeation and suppressing membrane degradation
title_short	Unveiling the role of K2NiF4-Structure Pr4Ni3O10+� surface coverage in boosting oxygen permeation and suppressing membrane degradation
title_full	Unveiling the role of K2NiF4-Structure Pr4Ni3O10+� surface coverage in boosting oxygen permeation and suppressing membrane degradation
title_fullStr	Unveiling the role of K2NiF4-Structure Pr4Ni3O10+� surface coverage in boosting oxygen permeation and suppressing membrane degradation
title_full_unstemmed	Unveiling the role of K2NiF4-Structure Pr4Ni3O10+� surface coverage in boosting oxygen permeation and suppressing membrane degradation
title_sort	unveiling the role of k2nif4-structure pr4ni3o10+� surface coverage in boosting oxygen permeation and suppressing membrane degradation
publisher	Elsevier B.V.
publishDate	2025
_version_	1825816247146643456
score	13.244413

Unveiling the role of K2NiF4-Structure Pr4Ni3O10+� surface coverage in boosting oxygen permeation and suppressing membrane degradation

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