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Electrocatalytic Oxygen Reduction Reaction
2008Oxygen (O2) is the most abundant element in the Earth’s crust. The oxygen reduction reaction (ORR) is also the most important reaction in life processes such as biological respiration, and in energy converting systems such as fuel cells. ORR in aqueous solutions occurs mainly by two pathways: the direct 4-electron reduction pathway from O2 to H2O, and ...
Chaojie Song, Jiujun Zhang
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Anodophilic Biofilm Catalyzes Cathodic Oxygen Reduction
Environmental Science & Technology, 2009Poor cathodic oxygen reduction and the detrimental buildup of a pH gradient between anode and cathode are the major hurdles in the development of sustainable microbial fuel cells (MFCs). This article describes and tests a concept that can help overcoming both of these limitations, by inverting the polarity of the MFC repeatedly, allowing anodic and ...
Cheng, K.Y., Ho, G., Cord-Ruwisch, R.
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Periplasmic oxygen reduction by Desulfovibrio species
Archives of Microbiology, 2001Washed cells of Desulfovibrio vulgaris strain Marburg (DSM 2119) reduced oxygen to water with H(2) as electron donor at a mean rate of 253 nmol O(2) min(-1) (mg protein)(-1). After separating the periplasm from the cells, more than 60% of the cytochrome c activity and 90% of the oxygen-reducing activity were found in the periplasmic fraction.
A, Baumgarten +3 more
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Mechanism of Oxygen Reduction Reaction
2021This chapter describes the mechanism and kinetics of oxygen reduction. Therefore, the adsorption of O2 on transition metals will be discussed in detail below. The adsorption of oxygen molecules on the surface of the catalyst is complicated. It not only has the associative adsorption and dissociative adsorption adsorbed in molecular form but also the ...
Zuzhen Zhao, Pei Kang Shen
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Carbon-Free Electrocatalyst for Oxygen Reduction and Oxygen Evolution Reactions
ACS Applied Materials & Interfaces, 2015A nanoporous Ag-embedded SnO2 thin film was fabricated by anodic treatment of electrodeposited Ag-Sn alloy layers. The ordered nanoporous structure formed by anodization played a key role in enhancing the electrocatalytic performance of the Ag-embedded SnO2 layer in several ways: (1) the roughness factor of the thin film is greatly increased from 23 in
Yang, Yang +6 more
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Oxygen reduction on stainless steel
Journal of Applied Electrochemistry, 1993Oxygen reduction was studied on AISI 304 stainless steel in 0.51 m NaCl solution at pH values ranging from 4 to 10. A rotating disc electrode was employed. It was found that oxygen reduction is under mixed activation-diffusion control. The reaction order with respect to oxygen was found to be one.
Babić, Ranko +1 more
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Application of Oxygen Reduction Catalysts
2021Oxygen reduction reaction (ORR) has been realized existing in many devices like low-temperature fuel cells, metal-air (oxygen) batteries, oxygen sensors and the production of hydrogen peroxide. Therefore, oxygen reduction catalyst has attracted much attention.
Jinliang Zhu +3 more
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Magnetic Field Enhanced Oxygen Reduction Reaction via Oxygen Diffusion Speedup
Small MethodsAbstractThe mass‐transfer of oxygen in liquid phases (including in the bulk electrolyte and near the electrode surface) is a critical step to deliver oxygen to catalyst sites (especially immersed catalyst sites) and use the full capacity of oxygen reduction reaction (ORR).
Yongqiang Yang +6 more
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Cu-Containing Oxygen Reduction Catalysts
ECS Meeting Abstracts, 2010Abstract not Available.
Andrew A. Gewirth, Matthew Thorum
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