The Influence of the Cation on the Oxygen Reduction and Evolution Activities of Oxide Surfaces in Alkaline Electrolyte

Jin Suntivich; Erin E. Perry; Hubert A. Gasteiger; Yang Shao-Horn

doi:10.1007/s12678-012-0118-x

The Influence of the Cation on the Oxygen Reduction and Evolution Activities of Oxide Surfaces in Alkaline Electrolyte

Jin Suntivich, Erin E. Perry, Hubert A. Gasteiger, Yang Shao-Horn

Chair of Technical Electrochemistry

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

120 Scopus citations

Abstract

Understanding the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) mechanisms is critical to the design of future electrocatalysts for fuel cells, electrolyzers, and metal-air batteries. As parts of the effort to elucidate the reaction mechanisms, we report the influence of the cationic species on the ORR/OER activity of select transition metal oxide catalysts in alkaline solutions. Specifically, we use Li⁺, Na⁺, and K⁺-containing electrolytes to assess the role of the cation on the ORR activity of Pt nanoparticles and LaMnO_3+δ, as well as the OER activity of rutile IrO₂ and Ba_{0. 5}Sr_{0. 5}Co_{0. 8}Fe_{0. 2}O_3-δ. We found that all these benchmark electrocatalysts share the same cation trends, where the presence of the smaller cation (Li⁺) always leads to lower activity. We argue that this finding represents the possible cation influence on the ORR/OER intermediate stabilization.

Original language	English
Pages (from-to)	49-55
Number of pages	7
Journal	Electrocatalysis
Volume	4
Issue number	1
DOIs	https://doi.org/10.1007/s12678-012-0118-x
State	Published - Mar 2013

Keywords

Electrochemistry
Fuel cell
Metal-air battery
Oxygen evolution reaction (OER)
Oxygen reduction reaction (ORR)
Transition metal oxide
Water splitting

UN SDGs

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title = "The Influence of the Cation on the Oxygen Reduction and Evolution Activities of Oxide Surfaces in Alkaline Electrolyte",

abstract = "Understanding the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) mechanisms is critical to the design of future electrocatalysts for fuel cells, electrolyzers, and metal-air batteries. As parts of the effort to elucidate the reaction mechanisms, we report the influence of the cationic species on the ORR/OER activity of select transition metal oxide catalysts in alkaline solutions. Specifically, we use Li+, Na+, and K+-containing electrolytes to assess the role of the cation on the ORR activity of Pt nanoparticles and LaMnO3+δ, as well as the OER activity of rutile IrO2 and Ba0. 5Sr0. 5Co0. 8Fe0. 2O3-δ. We found that all these benchmark electrocatalysts share the same cation trends, where the presence of the smaller cation (Li+) always leads to lower activity. We argue that this finding represents the possible cation influence on the ORR/OER intermediate stabilization.",

keywords = "Electrochemistry, Fuel cell, Metal-air battery, Oxygen evolution reaction (OER), Oxygen reduction reaction (ORR), Transition metal oxide, Water splitting",

author = "Jin Suntivich and Perry, {Erin E.} and Gasteiger, {Hubert A.} and Yang Shao-Horn",

note = "Funding Information: Acknowledgments This work is supported by the U.S. Department of Energy Hydrogen Initiative program under award DE-FG02-05ER15728. J.S. would like to acknowledge Ziff Environmental Fellowship from the Harvard University Center for the Environment. E. E. P. was supported by John Reed Scholarship from the Undergraduate Research Opportunities Program.",

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AU - Perry, Erin E.

AU - Gasteiger, Hubert A.

AU - Shao-Horn, Yang

N1 - Funding Information: Acknowledgments This work is supported by the U.S. Department of Energy Hydrogen Initiative program under award DE-FG02-05ER15728. J.S. would like to acknowledge Ziff Environmental Fellowship from the Harvard University Center for the Environment. E. E. P. was supported by John Reed Scholarship from the Undergraduate Research Opportunities Program.

PY - 2013/3

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N2 - Understanding the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) mechanisms is critical to the design of future electrocatalysts for fuel cells, electrolyzers, and metal-air batteries. As parts of the effort to elucidate the reaction mechanisms, we report the influence of the cationic species on the ORR/OER activity of select transition metal oxide catalysts in alkaline solutions. Specifically, we use Li+, Na+, and K+-containing electrolytes to assess the role of the cation on the ORR activity of Pt nanoparticles and LaMnO3+δ, as well as the OER activity of rutile IrO2 and Ba0. 5Sr0. 5Co0. 8Fe0. 2O3-δ. We found that all these benchmark electrocatalysts share the same cation trends, where the presence of the smaller cation (Li+) always leads to lower activity. We argue that this finding represents the possible cation influence on the ORR/OER intermediate stabilization.

AB - Understanding the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) mechanisms is critical to the design of future electrocatalysts for fuel cells, electrolyzers, and metal-air batteries. As parts of the effort to elucidate the reaction mechanisms, we report the influence of the cationic species on the ORR/OER activity of select transition metal oxide catalysts in alkaline solutions. Specifically, we use Li+, Na+, and K+-containing electrolytes to assess the role of the cation on the ORR activity of Pt nanoparticles and LaMnO3+δ, as well as the OER activity of rutile IrO2 and Ba0. 5Sr0. 5Co0. 8Fe0. 2O3-δ. We found that all these benchmark electrocatalysts share the same cation trends, where the presence of the smaller cation (Li+) always leads to lower activity. We argue that this finding represents the possible cation influence on the ORR/OER intermediate stabilization.

KW - Electrochemistry

KW - Fuel cell

KW - Metal-air battery

KW - Oxygen evolution reaction (OER)

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KW - Water splitting

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The Influence of the Cation on the Oxygen Reduction and Evolution Activities of Oxide Surfaces in Alkaline Electrolyte

Abstract

Keywords

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