Insight into Oxygen Evolution Reaction Kinetics from Gas Fed Polymer Electrolyte Water Electrolysis

2018 ◽  
Keyword(s):  
Reaction Kinetics ◽  
Polymer Electrolyte ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Electrolysis ◽  
Insight Into

Towards a generic understanding of oxygen evolution reaction kinetics in polymer electrolyte water electrolysis

2020 ◽  
Vol 13 (7) ◽  
pp. 2153-2166 ◽  
Author(s):  
Tobias Schuler ◽  
Taro Kimura ◽  
Thomas J. Schmidt ◽  
Felix N. Büchi
Keyword(s):  
Reaction Kinetics ◽  
Kinetic Parameters ◽  
Polymer Electrolyte ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Reaction Order ◽  
Water Electrolysis ◽  
Iridium Oxide

The reaction order of water and the electro-kinetic parameters are determined for the oxygen evolution reaction on iridium oxide.

scholarly journals Oxide-supported Ir nanodendrites with high activity and durability for the oxygen evolution reaction in acid PEM water electrolyzers

2015 ◽  
Vol 6 (6) ◽  
pp. 3321-3328 ◽  
Author(s):  
Hyung-Suk Oh ◽  
Hong Nhan Nong ◽  
Tobias Reier ◽  
Manuel Gliech ◽  
Peter Strasser
Keyword(s):  
Catalytic Activity ◽  
High Activity ◽  
Polymer Electrolyte ◽  
Oxygen Evolution ◽  
Tin Oxide ◽  
Oxygen Evolution Reaction ◽  
Polymer Electrolyte Membrane ◽  
Water Electrolysis ◽  
Electrolyte Membrane

Ir nanodendrites (Ir-ND) supported on antimony doped tin oxide (ATO) show enhanced catalytic activity and stability for oxygen evolution reaction (OER) in polymer electrolyte membrane (PEM) water electrolysis.

scholarly journals Connected iridium nanoparticle catalysts coated onto silica with high density for oxygen evolution in polymer electrolyte water electrolysis

2020 ◽  
Vol 2 (1) ◽  
pp. 171-175 ◽  
Author(s):  
Yoshiyuki Sugita ◽  
Takanori Tamaki ◽  
Hidenori Kuroki ◽  
Takeo Yamaguchi
Keyword(s):  
Polymer Electrolyte ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Electrolysis ◽  
High Density ◽  
Nanoparticle Catalysts

Connected Ir nanoparticle catalysts without any electron-conducting support are prepared for oxygen evolution reaction in polymer electrolyte water electrolysis.

scholarly journals The Effect of Iron Impurities on Transition Metal Catalysts for the Oxygen Evolution Reaction in Alkaline Environment: Activity Mediators or Active Sites?

2020 ◽  
Author(s):  
Ioannis Spanos ◽  
Justus Masa ◽  
Aleksandar Zeradjanin ◽  
Robert Schlögl
Keyword(s):  
Transition Metal ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Active Sites ◽  
Water Electrolysis ◽  
Metal Catalysts ◽  
Transition Metal Catalysts ◽  
Alkaline Water Electrolysis ◽  
Co Catalysts ◽  
Model Transition

AbstractThere is an ongoing debate on elucidating the actual role of Fe impurities in alkaline water electrolysis, acting either as reactivity mediators or as co-catalysts through synergistic interaction with the main catalyst material. This perspective summarizes the most prominent oxygen evolution reaction (OER) mechanisms mostly for Ni-based oxides as model transition metal catalysts and highlights the effect of Fe incorporation on the catalyst surface in the form of impurities originating from the electrolyte or co-precipitated in the catalyst lattice, in modulating the OER reaction kinetics, mechanism and stability. Graphic Abstract

scholarly journals Spin-sate reconfiguration induced by alternating magnetic field for efficient oxygen evolution reaction

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Gang Zhou ◽  
Peifang Wang ◽  
Hao Li ◽  
Bin Hu ◽  
Yan Sun ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Active Sites ◽  
Reaction Pathway ◽  
Low Cost ◽  
Orbital Interaction ◽  
New Paradigm ◽  
Metal Organic ◽  
Energy Conversion Devices

AbstractOxygen evolution reaction (OER) plays a determining role in electrochemical energy conversion devices, but challenges remain due to the lack of effective low-cost electrocatalysts and insufficient understanding about sluggish reaction kinetics. Distinguish from complex nano-structuring, this work focuses on the spin-related charge transfer and orbital interaction between catalysts and intermediates to accelerate catalytic reaction kinetics. Herein, we propose a simple magnetic-stimulation approach to rearrange spin electron occupation in noble-metal-free metal-organic frameworks (MOFs) with a feature of thermal-differentiated superlattice, in which the localized magnetic heating in periodic spatial distribution makes the spin flip occur at particular active sites, demonstrating a spin-dependent reaction pathway. As a result, the spin-rearranged Co0.8Mn0.2 MOF displays mass activities of 3514.7 A gmetal−1 with an overpotential of ~0.27 V, which is 21.1 times that of pristine MOF. Our findings provide a new paradigm for designing spin electrocatalysis and steering reaction kinetics.

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