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Plasma Sprayed Oxygen Electrode for Solid Oxide Fuel Cells and High Temperature Electrolyzers

Ansar, Asif and Schiller, Günther and Patz, Olaf and Gregoire, Jean Baptiste and Ilhan, Zeynep (2008) Plasma Sprayed Oxygen Electrode for Solid Oxide Fuel Cells and High Temperature Electrolyzers. In: 8 the European SOFC Forum. 8 the European SOFC Forum, 2008-06-30 - 2008-07-03, Lucerne, Switzerland.

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Abstract

Perovskite-type LSM and LSCF deposits were developed for oxygen electrode for solid oxide fuel cell and high temperature water electrolyzer by atmospheric plasma spraying (APS) using different feedstock powders. The deposits were tailored to exhibit high oxygen catalytic activity, oxygen surface exchange and diffusion rates, gas permeability and electronic-ionic conductivity. Deposits did not exhibit undesired secondary phases that may form in plasma. Promoting partial melting of the surface of the particles ensured interlayer cohesion and very porous deposit. In SOFC mode cells with LSCF cathodes operating at 800 °C had more than 700 mW/cm² power densities at 0.7 V, which was 35% better than that of cells with LSM cathode. When operating in electrolyzer mode at 800 °C the cells with LSCF oxygen electrode also proved significantly enhanced electrochemical performance compared to cells with LSM oxygen electrode. At a current density of 1 A/cm2 the voltage for water splitting was reduced to around 1.4 V at an operating temperature of 800 °C and to 1.28 V at 850 °C.

Item URL in elib:https://elib.dlr.de/56868/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Plasma Sprayed Oxygen Electrode for Solid Oxide Fuel Cells and High Temperature Electrolyzers
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ansar, AsifUNSPECIFIEDUNSPECIFIED
Schiller, GüntherUNSPECIFIEDUNSPECIFIED
Patz, OlafUNSPECIFIEDUNSPECIFIED
Gregoire, Jean BaptisteUNSPECIFIEDUNSPECIFIED
Ilhan, ZeynepUNSPECIFIEDUNSPECIFIED
Date:May 2008
Journal or Publication Title:8 the European SOFC Forum
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Editors:
EditorsEmail
Bossel, UlfUNSPECIFIED
Status:Published
Keywords:Perovskite, LSCF, LSM, SOFC, Plasma spraying
Event Title:8 the European SOFC Forum
Event Location:Lucerne, Switzerland
Event Type:international Conference
Event Dates:2008-06-30 - 2008-07-03
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion (old)
HGF - Program Themes:E VG - Combustion and Gas Turbine Technologies (old)
DLR - Research area:Energy
DLR - Program:E VG - Combustion and Gas Turbine Technologies
DLR - Research theme (Project):E - Brennstoffe (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Ilhan, Zeynep
Deposited On:15 Dec 2008
Last Modified:31 Jul 2019 19:23

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