Chromium phosphide CrP as highly active and stable electrocatalysts for oxygen electroreduction in alkaline media

Catalysts for oxygen reduction reaction (ORR) are key components in emerging energy technologies such as fuel cells and metal-air batteries. Developing low-cost, high performance and stable electrocatalysts is critical for the extensive implementation of these technologies. Herein, we present a proc...

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Autores: Liu, Junfeng, Yu, Xiaoting, Du, Ruifeng, Zhang, Chaoqi, Zhang, Ting, Llorca Piqué, Jordi|||0000-0002-7447-9582
Tipo de recurso: artículo
Fecha de publicación:2019
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/172704
Acceso en línea:https://hdl.handle.net/2117/172704
https://dx.doi.org/10.1016/j.apcatb.2019.117846
Access Level:acceso abierto
Palabra clave:Electrocatalysis
Metal phosphide
Colloidal synthesis
Oxygen reduction
Electrocatàlisi
Àrees temàtiques de la UPC::Enginyeria química
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repository_id_str
spelling Chromium phosphide CrP as highly active and stable electrocatalysts for oxygen electroreduction in alkaline mediaLiu, JunfengYu, XiaotingDu, RuifengZhang, ChaoqiZhang, TingLlorca Piqué, Jordi|||0000-0002-7447-9582ElectrocatalysisMetal phosphideColloidal synthesisElectrocatalysisOxygen reductionElectrocatàlisiÀrees temàtiques de la UPC::Enginyeria químicaCatalysts for oxygen reduction reaction (ORR) are key components in emerging energy technologies such as fuel cells and metal-air batteries. Developing low-cost, high performance and stable electrocatalysts is critical for the extensive implementation of these technologies. Herein, we present a procedure to prepare colloidal chromium phosphide CrP nanocrystals and we test their performance as ORR electrocatalyst. CrP-based catalysts exhibited remarkable activities with a limiting current density of 4.94¿mA¿cm-2 at 0.2¿V, a half-potential of 0.65¿V and an onset potential of 0.8¿V at 1600¿rpm, which are comparable to commercial Pt/C. Advantageously, CrP-based catalysts displayed much higher stabilities and higher tolerances to methanol in alkaline solution. Using density functional theory calculations, we demonstrate CrP to provide a very strong chemisorption of O2 that facilitates its reduction and explains the excellent ORR performance experimentally demonstrated.20192019-11-0520192019-11-19journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/172704https://dx.doi.org/10.1016/j.apcatb.2019.117846reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/1727042026-05-27T15:37:01Z
dc.title.none.fl_str_mv Chromium phosphide CrP as highly active and stable electrocatalysts for oxygen electroreduction in alkaline media
title Chromium phosphide CrP as highly active and stable electrocatalysts for oxygen electroreduction in alkaline media
spellingShingle Chromium phosphide CrP as highly active and stable electrocatalysts for oxygen electroreduction in alkaline media
Liu, Junfeng
Electrocatalysis
Metal phosphide
Colloidal synthesis
Electrocatalysis
Oxygen reduction
Electrocatàlisi
Àrees temàtiques de la UPC::Enginyeria química
title_short Chromium phosphide CrP as highly active and stable electrocatalysts for oxygen electroreduction in alkaline media
title_full Chromium phosphide CrP as highly active and stable electrocatalysts for oxygen electroreduction in alkaline media
title_fullStr Chromium phosphide CrP as highly active and stable electrocatalysts for oxygen electroreduction in alkaline media
title_full_unstemmed Chromium phosphide CrP as highly active and stable electrocatalysts for oxygen electroreduction in alkaline media
title_sort Chromium phosphide CrP as highly active and stable electrocatalysts for oxygen electroreduction in alkaline media
dc.creator.none.fl_str_mv Liu, Junfeng
Yu, Xiaoting
Du, Ruifeng
Zhang, Chaoqi
Zhang, Ting
Llorca Piqué, Jordi|||0000-0002-7447-9582
author Liu, Junfeng
author_facet Liu, Junfeng
Yu, Xiaoting
Du, Ruifeng
Zhang, Chaoqi
Zhang, Ting
Llorca Piqué, Jordi|||0000-0002-7447-9582
author_role author
author2 Yu, Xiaoting
Du, Ruifeng
Zhang, Chaoqi
Zhang, Ting
Llorca Piqué, Jordi|||0000-0002-7447-9582
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Electrocatalysis
Metal phosphide
Colloidal synthesis
Electrocatalysis
Oxygen reduction
Electrocatàlisi
Àrees temàtiques de la UPC::Enginyeria química
topic Electrocatalysis
Metal phosphide
Colloidal synthesis
Electrocatalysis
Oxygen reduction
Electrocatàlisi
Àrees temàtiques de la UPC::Enginyeria química
description Catalysts for oxygen reduction reaction (ORR) are key components in emerging energy technologies such as fuel cells and metal-air batteries. Developing low-cost, high performance and stable electrocatalysts is critical for the extensive implementation of these technologies. Herein, we present a procedure to prepare colloidal chromium phosphide CrP nanocrystals and we test their performance as ORR electrocatalyst. CrP-based catalysts exhibited remarkable activities with a limiting current density of 4.94¿mA¿cm-2 at 0.2¿V, a half-potential of 0.65¿V and an onset potential of 0.8¿V at 1600¿rpm, which are comparable to commercial Pt/C. Advantageously, CrP-based catalysts displayed much higher stabilities and higher tolerances to methanol in alkaline solution. Using density functional theory calculations, we demonstrate CrP to provide a very strong chemisorption of O2 that facilitates its reduction and explains the excellent ORR performance experimentally demonstrated.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-11-05
2019
2019-11-19
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/172704
https://dx.doi.org/10.1016/j.apcatb.2019.117846
url https://hdl.handle.net/2117/172704
https://dx.doi.org/10.1016/j.apcatb.2019.117846
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
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
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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