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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Energy Materials 2017: Materials for Energy Conversion with Emphasis on SOFC
Presentation Title Chromium Impurity Effects on SOFC Cathodes Using Half-cell Measurements
Author(s) Yiwen Gong, Yuexing Zhu, Soumendra Basu, Uday Pal, Srikanth Gopalan
On-Site Speaker (Planned) Yiwen Gong
Abstract Scope High efficiency, negligible pollution and clean energy make solid oxide fuel cells(SOFCs) attractive for distributed generation. The lower operating temperature enables the deployment of metallic interconnects based on ferritic stainless steel, like Crofer 22 APU. However, the chromia oxide scale that forms on the surface of the Crofer 22 APU alloy will react with the oxygen and water vapor to form volatile chromium species which will degrade the cathodes. In order to understanding the mechanism of the chromium poisoning in SOFC, electrolyte-supported half-cells have been fabricated. These half-cells have been tested at different temperatures with different humidity levels in the air, with and without mechanically contacting the Crofer 22 APU alloy. Galvanostatic current interruption (GCI) has been employed during the electrochemical test and after the test, scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy (EDX) have been used to measure the composition near the TBPs.
Proceedings Inclusion? Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Analysis of the Effects of Chromium Poisoning on LSM-based Cathode Using Polarization Modeling and Impedance Measurements
C-10: Effect of Sn on the Microstructure and Mechanical Properties of AM90 Extruded Alloy
C-9: Composition Effects on the Characteristics of Glass Sealants for Intermediate Temperature Solid Oxide Fuel Cell Applications
Chromium Impurity Effects on SOFC Cathodes Using Half-cell Measurements
Development of Solid Oxide Fuel Cell Residential CHP System
Effect of Strontium Content and Strain on Surface Segregation in LSCF
Electrophoretically Deposited Copper Manganese Spinel Coatings for Interconnections in Solid Oxide Fuel Cells
Enhanced Performance of Doped Ceria Electrolyte by the Addition of Barium Carbonate in Solid Oxide Fuel Cells
Fabrication and Operation of a 600W Anode-supported Tubular SOFC Stack
Investigation on Cathode Interlayer and Electrolyte for Improving Electric Power Efficiency of SOFCs
Low Temperature RAA Process for SOFC Stacks
Mitigation of Chromium Poisoning in Solid Oxide Fuel Cells
Modified SOFC Cermet Anodes for Improved Catalysis at High Fuel Utilization
New Materials for Solid Oxide Fuel Cells
Oxygen Reduction Reaction at the Cathode of Solid Oxide Fuel Cell Enhanced with Oxide Particles
Oxygen Reduction Reaction Mechanisms on Ruddlesden-Popper Cathodes for Intermediate-Temperature Solid Oxide Fuel Cells
Phase Field Modelling of Microstructure and Conductivity Evolution of SOFC Electrodes
Plasma Sprayed Protective Coatings on Metallic SOFC Interconnects: Interplay between Processing and Performance
Poisoning Mechanism and Performance Degradation at SOFC Cathode/Electrolyte Interfaces
Reactive Synthesis of Spinel Contact Layers with Metallic Precursor Powders
Synthesis and Characterisation of Perovskite Type Anode Material and Its Tape Casting for IT-SOFC Application

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