Insights into Ni-Fe couple in perovskite electrocatalysts for highly efficient electrochemical oxygen evolution

Liangqi Gui; Ziliang Huang; Geng Li; Qing Wang; Beibei He; Ling Zhao

doi:10.1016/j.electacta.2018.10.033

Insights into Ni-Fe couple in perovskite electrocatalysts for highly efficient electrochemical oxygen evolution

Liangqi Gui, Ziliang Huang, Geng Li, Qing Wang, Beibei He, Ling Zhao

Research output: Contribution to journal › Article › peer-review

35 Scopus citations

Abstract

Electrochemical oxygen evolution reaction is an appealing way to alleviate energy and environmental crisis. Perovskite oxides are supposed as attractive low-cost alternative electrocatalysts for oxygen evolution reaction relative to the IrO₂ and RuO₂ electrocatalysts. In this study, Fe-Ni coupled perovskite oxides, Pr_0.5Ba_0.5Fe_1-xNi_xO_3-δ, are proposed as novel electrocatalysts for oxygen evolution reaction in alkaline solution. The electrocatalytic activity of perovskites are optimized by engineering the couple of Fe-Ni cations. We identify a possible correlation between the enhancement in the activity and the amount of surface oxygen vacancies, OH⁻ adsorption, charge transfer kinetics as well as e_g-filling. The Pr_0.5Ba_0.5Fe_0.975Ni_0.025O_3-δ electrocatalyst demonstrates excellent activity for oxygen evolution reaction, favorably compared to other the state-of-the-art perovskite electrocatalysts. The encouraging results indicate that Pr_0.5Ba_0.5Fe_1-xNi_xO_3-δ series is a promising class of electrocatalysts for practical application of oxygen evolution reaction.

Original language	English (US)
Pages (from-to)	240-246
Number of pages	7
Journal	Electrochimica Acta
Volume	293
DOIs	https://doi.org/10.1016/j.electacta.2018.10.033
State	Published - Jan 10 2019

All Science Journal Classification (ASJC) codes

General Chemical Engineering
Electrochemistry

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10.1016/j.electacta.2018.10.033

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title = "Insights into Ni-Fe couple in perovskite electrocatalysts for highly efficient electrochemical oxygen evolution",

abstract = "Electrochemical oxygen evolution reaction is an appealing way to alleviate energy and environmental crisis. Perovskite oxides are supposed as attractive low-cost alternative electrocatalysts for oxygen evolution reaction relative to the IrO2 and RuO2 electrocatalysts. In this study, Fe-Ni coupled perovskite oxides, Pr0.5Ba0.5Fe1-xNixO3-δ, are proposed as novel electrocatalysts for oxygen evolution reaction in alkaline solution. The electrocatalytic activity of perovskites are optimized by engineering the couple of Fe-Ni cations. We identify a possible correlation between the enhancement in the activity and the amount of surface oxygen vacancies, OH− adsorption, charge transfer kinetics as well as eg-filling. The Pr0.5Ba0.5Fe0.975Ni0.025O3-δ electrocatalyst demonstrates excellent activity for oxygen evolution reaction, favorably compared to other the state-of-the-art perovskite electrocatalysts. The encouraging results indicate that Pr0.5Ba0.5Fe1-xNixO3-δ series is a promising class of electrocatalysts for practical application of oxygen evolution reaction.",

author = "Liangqi Gui and Ziliang Huang and Geng Li and Qing Wang and Beibei He and Ling Zhao",

note = "Funding Information: The project was supported by the National Natural Science Foundation of China (Grant No. 51402266 ), the National Natural Science Foundation of China (Grant No. 21401171 ). Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2019",

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doi = "10.1016/j.electacta.2018.10.033",

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T1 - Insights into Ni-Fe couple in perovskite electrocatalysts for highly efficient electrochemical oxygen evolution

AU - Gui, Liangqi

AU - Huang, Ziliang

AU - Li, Geng

AU - Wang, Qing

AU - He, Beibei

AU - Zhao, Ling

N1 - Funding Information: The project was supported by the National Natural Science Foundation of China (Grant No. 51402266 ), the National Natural Science Foundation of China (Grant No. 21401171 ). Publisher Copyright: © 2018 Elsevier Ltd

PY - 2019/1/10

Y1 - 2019/1/10

N2 - Electrochemical oxygen evolution reaction is an appealing way to alleviate energy and environmental crisis. Perovskite oxides are supposed as attractive low-cost alternative electrocatalysts for oxygen evolution reaction relative to the IrO2 and RuO2 electrocatalysts. In this study, Fe-Ni coupled perovskite oxides, Pr0.5Ba0.5Fe1-xNixO3-δ, are proposed as novel electrocatalysts for oxygen evolution reaction in alkaline solution. The electrocatalytic activity of perovskites are optimized by engineering the couple of Fe-Ni cations. We identify a possible correlation between the enhancement in the activity and the amount of surface oxygen vacancies, OH− adsorption, charge transfer kinetics as well as eg-filling. The Pr0.5Ba0.5Fe0.975Ni0.025O3-δ electrocatalyst demonstrates excellent activity for oxygen evolution reaction, favorably compared to other the state-of-the-art perovskite electrocatalysts. The encouraging results indicate that Pr0.5Ba0.5Fe1-xNixO3-δ series is a promising class of electrocatalysts for practical application of oxygen evolution reaction.

AB - Electrochemical oxygen evolution reaction is an appealing way to alleviate energy and environmental crisis. Perovskite oxides are supposed as attractive low-cost alternative electrocatalysts for oxygen evolution reaction relative to the IrO2 and RuO2 electrocatalysts. In this study, Fe-Ni coupled perovskite oxides, Pr0.5Ba0.5Fe1-xNixO3-δ, are proposed as novel electrocatalysts for oxygen evolution reaction in alkaline solution. The electrocatalytic activity of perovskites are optimized by engineering the couple of Fe-Ni cations. We identify a possible correlation between the enhancement in the activity and the amount of surface oxygen vacancies, OH− adsorption, charge transfer kinetics as well as eg-filling. The Pr0.5Ba0.5Fe0.975Ni0.025O3-δ electrocatalyst demonstrates excellent activity for oxygen evolution reaction, favorably compared to other the state-of-the-art perovskite electrocatalysts. The encouraging results indicate that Pr0.5Ba0.5Fe1-xNixO3-δ series is a promising class of electrocatalysts for practical application of oxygen evolution reaction.

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Insights into Ni-Fe couple in perovskite electrocatalysts for highly efficient electrochemical oxygen evolution

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