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000943422 0247_ $$2doi$$a10.1016/j.ijhydene.2022.10.265
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000943422 1001_ $$0P:(DE-HGF)0$$aKönigshofer, Benjamin$$b0$$eCorresponding author
000943422 245__ $$aExperimental investigation of segmented SOECs: Locally-resolved impedance and degradation characteristics
000943422 260__ $$aNew York, NY [u.a.]$$bElsevier$$c2023
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000943422 520__ $$aAbstract  High temperature solid oxide electrolysis cells (SOEC) provide an innovative solution for direct conversion of steam and electricity to hydrogen with the addi- tional capability of adding CO2 to produce syngas. However, specific operating conditions can have a negative impact on the performance and lifetime of SOECs. In this context, the distributions of operational parameters such as gas species, temperature and current density within the cell structure influence local transport processes and reaction kinetics and can lead to locally different electrochemical potentials and thus degradation phenomena. This study focuses on experimental investigations of steam-electrode supported SOECs with segmented air electrodes with the main objective to measure EIS and thus identify locally-resolved impedance and degradation characteristics caused by different operating conditions in steam and co-electrolysis mode. Thereby, significant correlations between operating condi- tions, local effects, electrode processes and degradation mechanisms were observed and analyzed in detail using EIS,DRT and SEM.Keywords:Solid Oxide Electrolysis Cell (SOEC), Segmented, Locally-resolved, Electrochemical Analayis, Distribution of Relaxation Times (DRT
000943422 536__ $$0G:(DE-HGF)POF4-1231$$a1231 - Electrochemistry for Hydrogen (POF4-123)$$cPOF4-123$$fPOF IV$$x0
000943422 536__ $$0G:(DE-Juel1)SOFC-20140602$$aSOFC - Solid Oxide Fuel Cell (SOFC-20140602)$$cSOFC-20140602$$fSOFC$$x1
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000943422 7001_ $$00000-0002-8355-1515$$aHöber, Michael$$b1
000943422 7001_ $$0P:(DE-Juel1)129636$$aMenzler, Norbert H.$$b2
000943422 7001_ $$0P:(DE-HGF)0$$aSchröttner, Hartmuth$$b3
000943422 7001_ $$0P:(DE-HGF)0$$aHochenauer, Christoph$$b4
000943422 7001_ $$0P:(DE-HGF)0$$aSubotić, Vanja$$b5
000943422 773__ $$0PERI:(DE-600)1484487-4$$a10.1016/j.ijhydene.2022.10.265$$gVol. 48, no. 10, p. 3740 - 3758$$n10$$p3740 - 3758$$tInternational journal of hydrogen energy$$v48$$x0360-3199$$y2023
000943422 8564_ $$uhttps://juser.fz-juelich.de/record/943422/files/1-s2.0-S0360319922051023-main.pdf$$yOpenAccess
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