Determining materials for energy conversion across scales:The alkaline oxygen evolution reaction  

作　　者：Philipp Gerschel Steven Angel Mohaned Hammad André Olean-Oliveira Blaž Toplak Vimanshu Chanda Ricardo Martínez-Hincapié Sebastian Sanden Ali Raza Khan Da Xing Amin Said Amin Hartmut Wiggers Harry Hoster Viktor Čolić Corina Andronescu Christof Schulz Ulf-Peter Apfel Doris Segets 

机构地区：[1]Inorganic Chemistry I—Technical Electrochemistry,Ruhr-Universität Bochum,Bochum,Germany [2]Institute for Energy and Materials Processes—Reactive Fluids,University of Duisburg-Essen,Duisburg,Germany [3]Institute for Energy and Materials Processes—Particle Science and Technology,University of Duisburg-Essen,Duisburg,Germany [4]Chemical Technology III,University of Duisburg-Essen,Duisburg,Germany [5]Center for Nanointegration Duisburg-Essen,University of Duisburg-Essen,Duisburg,Germany [6]Electrochemistry for Energy Conversion,Max Planck Institute for Chemical Energy Conversion,Mülheim an der Ruhr,Germany [7]Energy Technology,University of Duisburg-Essen,Duisburg,Germany [8]The Hydrogen and Fuel Cell Center ZBT GmbH,Duisburg,Germany [9]Department of Electrosynthesis,Fraunhofer UMSICHT,Oberhausen,Germany

出　　处：《Carbon Energy》2024年第12期229-251,共23页碳能源(英文)

基　　金：Fraunhofer-Gesellschaft,Grant/Award Number:097-602175;Ministry of Culture and Science of the State of North Rhine-Westphalia,Grant/Award Number:Mat4Hy;Mercator Research Center Ruhr,Grant/Award Numbers:Ex-2021-0034,Ko-2021-0016;Bundesministerium für Bildung und Forschung,Grant/Award Number:03XP0263;Deutsche Forschungsgemeinschaft,Grant/Award Number:CRC/TRR 247。

摘　　要：Despite considerable efforts to develop electrolyzers for energy conversion,progress has been hindered during the implementation stage by different catalyst development requirements in academic and industrial research.Herein,a coherent workflow for the efficient transition of electrocatalysts from basic research to application readiness for the alkaline oxygen evolution reaction is proposed.To demonstrate this research approach,La_(0.8)Sr_(0.2)CoO_(3) is selected as a catalyst,and its electrocatalytic performance is compared with that of the benchmark material NiFe_(2)O_(4).The La_(0.8)Sr_(0.2)CoO_(3) catalyst with the desired dispersity is successfully synthesized by scalable spray-flame synthesis.Subsequently,inks are formulated using different binders(Nafion^(®),Naf;Sustainion^(®),Sus),and nickel substrates are spray coated,ensuring a homogeneous catalyst distribution.Extensive electrochemical evaluations,including several scale-bridging techniques,highlight the efficiency of the La_(0.8)Sr_(0.2)CoO_(3) catalyst.Experiments using the scanning droplet cell(SDC)indicate good lateral homogeneity for La_(0.8)Sr_(0.2)CoO_(3) electrodes and NiFe_(2)O_(4)-Sus,while the NiFe_(2)O_(4)-Naf film suffers from delamination.Among the various half-cell techniques,SDC proves to be a valuable tool to quickly check whether a catalyst layer is suitable for full-cell-level testing and will be used for the fast-tracking of catalysts in the future.Complementary compression and flow cell experiments provide valuable information on the electrodes'behavior upon exposure to chemical and mechanical stress.Finally,parameters and conditions simulating industrial settings are applied using a zero-gap cell.Findings from various research fields across different scales obtained based on the developed coherent workflow contribute to a better understanding of the electrocatalytic system at the early stages of development and provide important insights for the evaluation of novel materials that are to be used in large-scale industrial applicat

关 键 词：alkaline water electrolysis oxygen evolution reaction PEROVSKITE zero-gap cell 

分 类 号：TM91[电气工程—电力电子与电力传动] O643.36[理学—物理化学]