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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Energy Materials 2017: Materials for Energy Conversion with Emphasis on SOFC
Presentation Title Low Temperature RAA Process for SOFC Stacks
Author(s) Jung Pyung Choi, Jeffry W Stevenson
On-Site Speaker (Planned) Jung Pyung Choi
Abstract Scope Chromia-forming ferritic stainless steels are preferred interconnect materials for intermediate temperature SOFCs because of their resistance to oxidation and low cost. However, they produce Cr-containing volatile species at SOFC operating temperatures, which can cause cathode poisoning. Hence, a protective coating is required on the surface of metal interconnect material. Reactive Air Aluminization (RAA) method was developed and used for the protective coating for prohibit chrome poisoning in the cathode material and for eliminating or minimizing reaction in between sealing material. This RAA process is typically done by 1,000C for forming stable alpha-alumina phases on the stainless steel surface. However, industrial partners want to reduce processing temperature. From this presentation, we will report the progress of developing lower temperature RAA process. We found potential that process temperature can be reduced at least 50C or more.
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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