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Numerical model of Co-Electrolysis in Solid Oxide Cells with Ni/Gd-Doped Ceria (CGO) fuel Electrode

Koksharov, Andrey and Taubmann, Julian and Riegraf, Matthias and Costa, Rémi and Latz, Arnulf and Jahnke, Thomas (2021) Numerical model of Co-Electrolysis in Solid Oxide Cells with Ni/Gd-Doped Ceria (CGO) fuel Electrode. The Electrochemical Society. 17th International Symposium on Solid Oxide Fuel Cells (SOFC-XVII), 18-23 Juli 2021, On-Line.

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Official URL: https://iopscience.iop.org/volume/1938-5862/103

Abstract

The co-electrolysis of atmospheric carbon dioxide with steam is seen as a potential source of synthesis gas. The electrochemically active electrode area on Ni/Gadolinium-doped ceria (CGO) electrodes extends from triple phase boundary (TPB) between Ni, CGO and gas to the double phase boundary (DPB) between CGO and gas. The proposed numerical model of a commercial electrolyser cell aims to reveal main kinetic mechanisms responsible for the electro-reduction at the Ni/CGO fuel electrode. In order to identify main reaction pathways, electrochemical experiments with two types of fuel electrode were performed: porous CGO and mixed Ni/CGO electrode. In this work preliminary results for a mechanism explaining steam electrolysis at the Ni/CGO electrode are presented.

Item URL in elib:https://elib.dlr.de/147602/
Document Type:Conference or Workshop Item (Speech)
Title:Numerical model of Co-Electrolysis in Solid Oxide Cells with Ni/Gd-Doped Ceria (CGO) fuel Electrode
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Koksharov, AndreyAndrey.Koksharov (at) dlr.deUNSPECIFIED
Taubmann, JulianUNSPECIFIEDUNSPECIFIED
Riegraf, MatthiasMatthias.Riegraf (at) dlr.deUNSPECIFIED
Costa, Rémiremi.costa (at) dlr.dehttps://orcid.org/0000-0002-3534-1935
Latz, Arnulfarnulf.latz (at) dlr.dehttps://orcid.org/0000-0003-1449-8172
Jahnke, ThomasThomas.Jahnke (at) dlr.deUNSPECIFIED
Date:18 July 2021
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:103
Page Range:pp. 921-930
Publisher:The Electrochemical Society
Series Name:ECS Transactions
Status:Published
Keywords:SOEC, Numerical Model, Double Phase Boundary, CGO
Event Title:17th International Symposium on Solid Oxide Fuel Cells (SOFC-XVII)
Event Location:On-Line
Event Type:international Conference
Event Dates:18-23 Juli 2021
HGF - Research field:Energy
HGF - Program:Energy System Design
HGF - Program Themes:Digitalization and System Technology
DLR - Research area:Energy
DLR - Program:E SY - Energy System Technology and Analysis
DLR - Research theme (Project):E - Energy System Technology
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Computational Electrochemistry
Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Koksharov, Andrey
Deposited On:23 Dec 2021 10:27
Last Modified:23 Dec 2021 10:27

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