From Small‐Area Observations to Insight: Surface‐Feature‐Extrapolation of Anodes for Alkaline Oxygen Evolution Reaction
ChemCatChem, vol. 16
Abstract
Abstract In this study, we developed a statistical framework, named multistage data quantification (MSDQ), to evaluate representative surface characteristics such as surface roughness, surface area, and homogeneity score of cobalt oxide‐based anodes, and contributing to a deeper insight into the quality of the anode surface. Atomic force microscopy (AFM) was employed to capture the surface morphology of two anodes that have a comparable loading of cobalt oxide but exhibit distinct morphological features. Application of MSDQ exposed notable disparities in surface characteristics across these anodes, underlining the critical importance of MSDQ in precise surface characterization. Specifically, surface roughness, surface area and homogeneity score effectively elucidated the disparities in electrocatalytic activity for the oxygen evolution reaction (OER), as quantified through scanning droplet cell (SDC) measurements. By conducting a systematic comparative analysis, the respective contributions of the extrinsic surface characteristics of the anodes to the intrinsic electrocatalytic material property could be differentiated and quantified. Applications of our findings range from benchmarking of anodes to optimization of anode manufacturing processes.
Authors 8
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Affiliation as printed
Institute for Energy and Materials Processes – Particle Science and Technology (EMPI-PST) University of Duisburg-Essen Carl-Benz-Straße 199 47057 Duisburg Germany
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Affiliation as printed
Center for Nanointegration Duisburg-Essen (CENIDE) University of Duisburg-Essen Carl-Benz-Straße 199 47057 Duisburg Germany
Institute for Energy and Materials Processes – Particle Science and Technology (EMPI-PST) University of Duisburg-Essen Carl-Benz-Straße 199 47057 Duisburg Germany
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Affiliation as printed
Center for Nanointegration Duisburg-Essen (CENIDE) University of Duisburg-Essen Carl-Benz-Straße 199 47057 Duisburg Germany
Chemical Technology III University of Duisburg-Essen Carl-Benz-Straße 199 47057 Duisburg Germany
Center for Nanointegration Duisburg-Essen (CENIDE) University of Duisburg-Essen Carl-Benz-Straße 199 47057 Duisburg Germany
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Affiliation as printed
Electrochemical Reaction Engineering RWTH Aachen University Forckenbeckstraße 51 52074 Aachen Germany
Electrochemical Reaction Engineering RWTH Aachen University Forckenbeckstraße 51 52074 Aachen Germany
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Affiliation as printed
Institute for Energy and Materials Processes – Particle Science and Technology (EMPI-PST) University of Duisburg-Essen Carl-Benz-Straße 199 47057 Duisburg Germany
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Affiliation as printed
Electrochemical Reaction Engineering RWTH Aachen University Forckenbeckstraße 51 52074 Aachen Germany
Electrochemical Reaction Engineering RWTH Aachen University Forckenbeckstraße 51 52074 Aachen Germany
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Affiliation as printed
Center for Nanointegration Duisburg-Essen (CENIDE) University of Duisburg-Essen Carl-Benz-Straße 199 47057 Duisburg Germany
Chemical Technology III University of Duisburg-Essen Carl-Benz-Straße 199 47057 Duisburg Germany
Center for Nanointegration Duisburg-Essen (CENIDE) University of Duisburg-Essen Carl-Benz-Straße 199 47057 Duisburg Germany
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Doris Segets corresponding
Affiliation as printed
Center for Nanointegration Duisburg-Essen (CENIDE) University of Duisburg-Essen Carl-Benz-Straße 199 47057 Duisburg Germany
Institute for Energy and Materials Processes – Particle Science and Technology (EMPI-PST) University of Duisburg-Essen Carl-Benz-Straße 199 47057 Duisburg Germany
Universitat Duisburg-Essen Institute for Combustion and Gas Dynamics-Reactive Fluids (IVG-RF) and Center for Nanointegration Duisburg-Essen (CENIDE) Carl-Benz-Str. 199 47057 Duisburg GERMANY
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