Journal ArticleDOI
The mechanism of oxygen reduction on MnO2-catalyzed air cathode in alkaline solution
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TLDR
Based on the experimental determination of the reaction orders of OH−, O2 and the intermediate Mn3+ ion, this paper proposed a chemical oxidation mechanism for the catalytic oxygen reduction, in which oxygen reduction proceeds through chemical oxidation of the discharge product of MnO2 rather than through a direct two-electron reduction.About:
This article is published in Journal of Electroanalytical Chemistry.The article was published on 2003-10-15. It has received 295 citations till now. The article focuses on the topics: Oxygen & Catalysis.read more
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Journal ArticleDOI
Oxygen Reduction in Alkaline Media: From Mechanisms to Recent Advances of Catalysts
Xiaoming Ge,Afriyanti Sumboja,Delvin Wuu,Tao An,Bing Li,F. W. Thomas Goh,T. S. Andy Hor,T. S. Andy Hor,Yun Zong,Zhaolin Liu +9 more
TL;DR: In this article, the authors introduce the thermodynamics, reaction kinetics, reaction mechanisms, and reaction pathways of ORR in aqueous alkaline media, and summarize the current status of the reaction pathways, advanced catalysts, and the future challenges of the research and development of the ORR.
Journal ArticleDOI
Nonstoichiometric Oxides as Low-Cost and Highly-Efficient Oxygen Reduction/Evolution Catalysts for Low-Temperature Electrochemical Devices
TL;DR: Reduction/Evolution Catalysts for Low-Temperature Electrochemical Devices Dengjie Chen, ⊥,∇ Chi Chen,†,⊥ Zarah Medina Baiyee,‡,§ and Francesco Ciucci*,†.
Journal ArticleDOI
MnO2-Based Nanostructures as Catalysts for Electrochemical Oxygen Reduction in Alkaline Media†
TL;DR: In this article, the electrochemical properties of MnO2-based nanostructures as low-cost catalysts for oxygen reduction reaction (ORR) in alkaline media were investigated.
Journal ArticleDOI
Recent Progress in Non-Precious Catalysts for Metal-Air Batteries
TL;DR: In this paper, a brief overview of the critical issues relevant to air-electrodes in metal-air batteries is presented, and some recent advancements in the development of non-precious catalysts for ORR in Li-air and Znair batteries are highlighted, including transition metal oxides, low-dimensional carbon-based structures, and other catalysts such as transition metal macrocycles and metal nitrides.
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In situ X-ray absorption spectroscopy investigation of a bifunctional manganese oxide catalyst with high activity for electrochemical water oxidation and oxygen reduction.
Yelena Gorlin,Benedikt Lassalle-Kaiser,Jesse D. Benck,Sheraz Gul,Samuel M. Webb,Vittal K. Yachandra,Junko Yano,Thomas F. Jaramillo +7 more
TL;DR: In situ XAS measurements on a bifunctional manganese oxide catalyst with high electrochemical activity for the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) demonstrate that the OER activity scales with film thickness, which suggests that the films have porous structure, which does not restrict electrocatalysis to the top geometric layer of the film.
References
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Journal ArticleDOI
Preparation of a new crystal form of manganese dioxide: λ-MnO2
TL;DR: In this paper, a spinel-type material LiMn2O4 with aqueous acid was found to result in conversion of the spinel to nearly pure MnO2.
Journal ArticleDOI
A Mechanistic Study of O 2 Reduction on Water Soluble Phthalocyanines Adsorbed on Graphite Electrodes
J. Zagal,P. Bindra,Ernest Yeager +2 more
TL;DR: In this article, Co and Fe tetrasulfonate phthalocyanines (M-TSP) have been found to have a pronounced catalytic effect on the O2 reduction process in both acid and alkaline solutions.
Journal ArticleDOI
The Manganese Dioxide Electrode in Alkaline Electrolyte; The Electron‐Proton Mechanism for the Discharge Process from MnO2 to MnO1.5
A. Kozawa,R. A. Powers +1 more
Journal ArticleDOI
The Cathodic Reduction Mechanism of Electrolytic Manganese Dioxide in Alkaline Electrolyte
A. Kozawa,J. F. Yeager +1 more
TL;DR: In this article, a two-stage reduction of graphite electrodeposited on graphite was studied, and the first stage is considered a homogeneous phase reduction, while the second stage involves a heterogeneous system.
Journal ArticleDOI
Bi-functional oxygen electrode using large surface area la1-xcaxcoo3 for rechargeable metal-air battery
TL;DR: In this paper, a gas-diffusion type carbon-based electrodes have been tested for the electrochemical reduction and evolution of oxygen, and the oxide catalyst is considered to decompose effectively HO{sub 2}{sup {minus}}, an intermediate appearing in both oxygen reduction and oxygen evolution reactions.
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MnO2-Based Nanostructures as Catalysts for Electrochemical Oxygen Reduction in Alkaline Media†
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