Ni-Xides (B, S, and P) for Alkaline OER

El-Refaei, Sayed Mahmoud; Llorens Rauret, David|||0000-0001-5359-5456; Manjón, Alba G.; Spanos, Ioannis|||0000-0001-5737-4992; Zeradjanin, Aleksandar|||0000-0002-0649-0544; Dieckhöfer, Stefan; Arbiol i Cobos, Jordi|||0000-0002-0695-1726; Schuhmann, Wolfgang|||0000-0003-2916-5223; Masa, Justus|||0000-0002-8555-5157

Ni-Xides (B, S, and P) for Alkaline OER

Ni-Xides (X = B, P, or S) exhibit intriguing properties that have endeared them for electrocatalytic water splitting. However, the role of B, P, and S, among others, in tailoring the catalytic performance of the Ni-Xides remains vaguely understood, especially if they are studied in unpurified KOH (U...

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Autores:	El-Refaei, Sayed Mahmoud, Llorens Rauret, David\|\|\|0000-0001-5359-5456, Manjón, Alba G., Spanos, Ioannis\|\|\|0000-0001-5737-4992, Zeradjanin, Aleksandar\|\|\|0000-0002-0649-0544, Dieckhöfer, Stefan, Arbiol i Cobos, Jordi\|\|\|0000-0002-0695-1726, Schuhmann, Wolfgang\|\|\|0000-0003-2916-5223, Masa, Justus\|\|\|0000-0002-8555-5157
Tipo de recurso:	artículo
Fecha de publicación:	2024
País:	España
Institución:	Universitat Autònoma de Barcelona
Repositorio:	Dipòsit Digital de Documents de la UAB
Idioma:	inglés
OAI Identifier:	oai:ddd.uab.cat:294247
Acceso en línea:	https://ddd.uab.cat/record/294247 https://dx.doi.org/urn:doi:10.1021/acsaem.3c03114
Access Level:	acceso abierto
Palabra clave:	Oxygen Evolution Reaction Reconstruction Nickel Hydroxide Nickel Phosphide Nickel Sulfide Nickel Boride

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spelling	Ni-Xides (B, S, and P) for Alkaline OERShedding Light on Reconstruction Processes and Interplay with Incidental Fe Impurities as Synergistic Activity DriversEl-Refaei, Sayed MahmoudLlorens Rauret, David\|\|\|0000-0001-5359-5456Manjón, Alba G.Spanos, Ioannis\|\|\|0000-0001-5737-4992Zeradjanin, Aleksandar\|\|\|0000-0002-0649-0544Dieckhöfer, StefanArbiol i Cobos, Jordi\|\|\|0000-0002-0695-1726Schuhmann, Wolfgang\|\|\|0000-0003-2916-5223Masa, Justus\|\|\|0000-0002-8555-5157Oxygen Evolution ReactionReconstructionNickel HydroxideNickel PhosphideNickel SulfideNickel BorideNi-Xides (X = B, P, or S) exhibit intriguing properties that have endeared them for electrocatalytic water splitting. However, the role of B, P, and S, among others, in tailoring the catalytic performance of the Ni-Xides remains vaguely understood, especially if they are studied in unpurified KOH (Un-KOH) because of the renowned impact of incidental Fe impurities. Therefore, decoupling the effect induced by Fe impurities from inherent material reconstruction processes necessitates investigation of the materials in purified KOH solutions (P-KOH). Herein, studies of the OER on NiB, NiP, and NiS in P-KOH and Un-KOH coupled with in situ Raman spectroscopy, ex situ post-electrocatalysis, and online dissolution studies by ICP-OES are used to unveil the distinctive role of Ni-Xide reconstruction and the role of Fe impurities and their interplay on the electrocatalytic behavior of the three Ni-Xide precatalysts during the OER. There was essentially no difference in the OER activity and the electrochemical Ni/Ni redox activation fingerprints of the three precatalysts via cyclic voltammetry in P-KOH, whereas their OER activity was considerably higher in Un-KOH with marked differences in the intrinsic activity and evolution of the Ni/Ni fingerprint redox peaks. Thus, in the absence of Fe in the electrolyte (P-KOH), neither the nature of the guest element (B, P, and S) nor the underlying reconstruction processes are decisive activity drivers. This underscores the crucial role played by incidental Fe impurities on the OER activity of Ni-Xide precatalysts, which until now has been overlooked. In situ Raman spectroscopy revealed that the nickel hydroxide derived from NiB exhibits higher disorder than in the case of NiP and NiS, both exhibiting a similar degree of disorder. The guest elements thus influence the degree of disorder of the formed nickel oxyhydroxides, which through their synergistic interaction with incidental Fe impurities concertedly realize high OER performance. 22024-01-0120242024-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/294247https://dx.doi.org/urn:doi:10.1021/acsaem.3c03114reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengAgencia Estatal de Investigación https://doi.org/10.13039/501100011033 PID2020-116093RB-C43Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 RYC2021-033479-IMinisterio de Ciencia e Innovación https://doi.org/10.13039/501100004837 CEX2021-001214-SAgència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 2021/SGR-00457open accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:2942472026-06-06T12:50:31Z
dc.title.none.fl_str_mv	Ni-Xides (B, S, and P) for Alkaline OER Shedding Light on Reconstruction Processes and Interplay with Incidental Fe Impurities as Synergistic Activity Drivers
title	Ni-Xides (B, S, and P) for Alkaline OER
spellingShingle	Ni-Xides (B, S, and P) for Alkaline OER El-Refaei, Sayed Mahmoud Oxygen Evolution Reaction Reconstruction Nickel Hydroxide Nickel Phosphide Nickel Sulfide Nickel Boride
title_short	Ni-Xides (B, S, and P) for Alkaline OER
title_full	Ni-Xides (B, S, and P) for Alkaline OER
title_fullStr	Ni-Xides (B, S, and P) for Alkaline OER
title_full_unstemmed	Ni-Xides (B, S, and P) for Alkaline OER
title_sort	Ni-Xides (B, S, and P) for Alkaline OER
dc.creator.none.fl_str_mv	El-Refaei, Sayed Mahmoud Llorens Rauret, David\|\|\|0000-0001-5359-5456 Manjón, Alba G. Spanos, Ioannis\|\|\|0000-0001-5737-4992 Zeradjanin, Aleksandar\|\|\|0000-0002-0649-0544 Dieckhöfer, Stefan Arbiol i Cobos, Jordi\|\|\|0000-0002-0695-1726 Schuhmann, Wolfgang\|\|\|0000-0003-2916-5223 Masa, Justus\|\|\|0000-0002-8555-5157
author	El-Refaei, Sayed Mahmoud
author_facet	El-Refaei, Sayed Mahmoud Llorens Rauret, David\|\|\|0000-0001-5359-5456 Manjón, Alba G. Spanos, Ioannis\|\|\|0000-0001-5737-4992 Zeradjanin, Aleksandar\|\|\|0000-0002-0649-0544 Dieckhöfer, Stefan Arbiol i Cobos, Jordi\|\|\|0000-0002-0695-1726 Schuhmann, Wolfgang\|\|\|0000-0003-2916-5223 Masa, Justus\|\|\|0000-0002-8555-5157
author_role	author
author2	Llorens Rauret, David\|\|\|0000-0001-5359-5456 Manjón, Alba G. Spanos, Ioannis\|\|\|0000-0001-5737-4992 Zeradjanin, Aleksandar\|\|\|0000-0002-0649-0544 Dieckhöfer, Stefan Arbiol i Cobos, Jordi\|\|\|0000-0002-0695-1726 Schuhmann, Wolfgang\|\|\|0000-0003-2916-5223 Masa, Justus\|\|\|0000-0002-8555-5157
author2_role	author author author author author author author author
dc.subject.none.fl_str_mv	Oxygen Evolution Reaction Reconstruction Nickel Hydroxide Nickel Phosphide Nickel Sulfide Nickel Boride
topic	Oxygen Evolution Reaction Reconstruction Nickel Hydroxide Nickel Phosphide Nickel Sulfide Nickel Boride
description	Ni-Xides (X = B, P, or S) exhibit intriguing properties that have endeared them for electrocatalytic water splitting. However, the role of B, P, and S, among others, in tailoring the catalytic performance of the Ni-Xides remains vaguely understood, especially if they are studied in unpurified KOH (Un-KOH) because of the renowned impact of incidental Fe impurities. Therefore, decoupling the effect induced by Fe impurities from inherent material reconstruction processes necessitates investigation of the materials in purified KOH solutions (P-KOH). Herein, studies of the OER on NiB, NiP, and NiS in P-KOH and Un-KOH coupled with in situ Raman spectroscopy, ex situ post-electrocatalysis, and online dissolution studies by ICP-OES are used to unveil the distinctive role of Ni-Xide reconstruction and the role of Fe impurities and their interplay on the electrocatalytic behavior of the three Ni-Xide precatalysts during the OER. There was essentially no difference in the OER activity and the electrochemical Ni/Ni redox activation fingerprints of the three precatalysts via cyclic voltammetry in P-KOH, whereas their OER activity was considerably higher in Un-KOH with marked differences in the intrinsic activity and evolution of the Ni/Ni fingerprint redox peaks. Thus, in the absence of Fe in the electrolyte (P-KOH), neither the nature of the guest element (B, P, and S) nor the underlying reconstruction processes are decisive activity drivers. This underscores the crucial role played by incidental Fe impurities on the OER activity of Ni-Xide precatalysts, which until now has been overlooked. In situ Raman spectroscopy revealed that the nickel hydroxide derived from NiB exhibits higher disorder than in the case of NiP and NiS, both exhibiting a similar degree of disorder. The guest elements thus influence the degree of disorder of the formed nickel oxyhydroxides, which through their synergistic interaction with incidental Fe impurities concertedly realize high OER performance.
publishDate	2024
dc.date.none.fl_str_mv	2 2024-01-01 2024 2024-01-01
dc.type.none.fl_str_mv	Article http://purl.org/coar/resource_type/c_6501 VoR http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv	info:eu-repo/semantics/article
format	article
dc.identifier.none.fl_str_mv	https://ddd.uab.cat/record/294247 https://dx.doi.org/urn:doi:10.1021/acsaem.3c03114
url	https://ddd.uab.cat/record/294247 https://dx.doi.org/urn:doi:10.1021/acsaem.3c03114
dc.language.none.fl_str_mv	Inglés eng
language_invalid_str_mv	Inglés
language	eng
dc.relation.none.fl_str_mv	Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 PID2020-116093RB-C43 Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 RYC2021-033479-I Ministerio de Ciencia e Innovación https://doi.org/10.13039/501100004837 CEX2021-001214-S Agència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 2021/SGR-00457
dc.rights.none.fl_str_mv	open access http://purl.org/coar/access_right/c_abf2 https://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv	info:eu-repo/semantics/openAccess
rights_invalid_str_mv	open access http://purl.org/coar/access_right/c_abf2 https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv	openAccess
dc.format.none.fl_str_mv	application/pdf
dc.source.none.fl_str_mv	reponame:Dipòsit Digital de Documents de la UAB instname:Universitat Autònoma de Barcelona
instname_str	Universitat Autònoma de Barcelona
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Ni-Xides (B, S, and P) for Alkaline OER

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