Sr, Fe Co-doped Perovskite Oxides With High Performance for Oxygen Evolution Reaction

Developing efficient and earth-abundant electrocatalysts for the oxygen evolution reaction (OER) is still a big challenge. Here, perovskite La(0.4)Sr(0.6)Ni(0.5)Fe(0.5)O(3) nanoparticles were rationally designed and synthesized by the sol-gel method with an average size around 25 nm, and it has a re...

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Autores principales: Guo, Qiang, Li, Xiang, Wei, Haifei, Liu, Yi, Li, Lanlan, Yang, Xiaojing, Zhang, Xinghua, Liu, Hui, Lu, Zunming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2019
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6491708/
https://www.ncbi.nlm.nih.gov/pubmed/31069212
http://dx.doi.org/10.3389/fchem.2019.00224
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author Guo, Qiang
Li, Xiang
Wei, Haifei
Liu, Yi
Li, Lanlan
Yang, Xiaojing
Zhang, Xinghua
Liu, Hui
Lu, Zunming
author_facet Guo, Qiang
Li, Xiang
Wei, Haifei
Liu, Yi
Li, Lanlan
Yang, Xiaojing
Zhang, Xinghua
Liu, Hui
Lu, Zunming
author_sort Guo, Qiang
collection PubMed
description Developing efficient and earth-abundant electrocatalysts for the oxygen evolution reaction (OER) is still a big challenge. Here, perovskite La(0.4)Sr(0.6)Ni(0.5)Fe(0.5)O(3) nanoparticles were rationally designed and synthesized by the sol-gel method with an average size around 25 nm, and it has a remarkable intrinsically activity and stability in 1 M KOH solution. Compared with other perovskite (LaNiO(3), LaFeO(3), and LaNi(0.5)Fe(0.5)O(3)) catalysts, La(0.4)Sr(0.6)Ni(0.5)Fe(0.5)O(3) exhibits superior OER performance, smaller tafel slope and lower overpotential. The high electrochemical performance of La(0.4)Sr(0.6)Ni(0.5)Fe(0.5)O(3) is attributed to its optimized e(g) filling (~1.2), as well as the excellent conductivity. This study demonstrates co-doping process is an effective way for increasing the intrinsic catalytic activity of the perovskite.
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spelling pubmed-64917082019-05-08 Sr, Fe Co-doped Perovskite Oxides With High Performance for Oxygen Evolution Reaction Guo, Qiang Li, Xiang Wei, Haifei Liu, Yi Li, Lanlan Yang, Xiaojing Zhang, Xinghua Liu, Hui Lu, Zunming Front Chem Chemistry Developing efficient and earth-abundant electrocatalysts for the oxygen evolution reaction (OER) is still a big challenge. Here, perovskite La(0.4)Sr(0.6)Ni(0.5)Fe(0.5)O(3) nanoparticles were rationally designed and synthesized by the sol-gel method with an average size around 25 nm, and it has a remarkable intrinsically activity and stability in 1 M KOH solution. Compared with other perovskite (LaNiO(3), LaFeO(3), and LaNi(0.5)Fe(0.5)O(3)) catalysts, La(0.4)Sr(0.6)Ni(0.5)Fe(0.5)O(3) exhibits superior OER performance, smaller tafel slope and lower overpotential. The high electrochemical performance of La(0.4)Sr(0.6)Ni(0.5)Fe(0.5)O(3) is attributed to its optimized e(g) filling (~1.2), as well as the excellent conductivity. This study demonstrates co-doping process is an effective way for increasing the intrinsic catalytic activity of the perovskite. Frontiers Media S.A. 2019-04-24 /pmc/articles/PMC6491708/ /pubmed/31069212 http://dx.doi.org/10.3389/fchem.2019.00224 Text en Copyright © 2019 Guo, Li, Wei, Liu, Li, Yang, Zhang, Liu and Lu. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Chemistry
Guo, Qiang
Li, Xiang
Wei, Haifei
Liu, Yi
Li, Lanlan
Yang, Xiaojing
Zhang, Xinghua
Liu, Hui
Lu, Zunming
Sr, Fe Co-doped Perovskite Oxides With High Performance for Oxygen Evolution Reaction
title Sr, Fe Co-doped Perovskite Oxides With High Performance for Oxygen Evolution Reaction
title_full Sr, Fe Co-doped Perovskite Oxides With High Performance for Oxygen Evolution Reaction
title_fullStr Sr, Fe Co-doped Perovskite Oxides With High Performance for Oxygen Evolution Reaction
title_full_unstemmed Sr, Fe Co-doped Perovskite Oxides With High Performance for Oxygen Evolution Reaction
title_short Sr, Fe Co-doped Perovskite Oxides With High Performance for Oxygen Evolution Reaction
title_sort sr, fe co-doped perovskite oxides with high performance for oxygen evolution reaction
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6491708/
https://www.ncbi.nlm.nih.gov/pubmed/31069212
http://dx.doi.org/10.3389/fchem.2019.00224
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