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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Energy Materials 2017: Materials for Energy Conversion with Emphasis on SOFC
Presentation Title Investigation on Cathode Interlayer and Electrolyte for Improving Electric Power Efficiency of SOFCs
Author(s) Takaaki Somekawa, Yoshio Matsuzaki, Yuya Tachikawa, Hiroshige Matsumoto, Shunsuke Taniguchi, Kazunari Sasaki
On-Site Speaker (Planned) Takaaki Somekawa
Abstract Scope SOFCs can potentially achieve a generating efficiency of higher than 60%LHV. To enhance generating efficiency of SOFCs, we have investigated the materials of cathode interlayer and electrolyte in terms of reducing the internal resistances. In the conventional SOFCs, ceria-based materials are used as the interlayer. However, highly resistive solid solutions have been reported to sometimes form at the interface of interlayer/electrolyte, resulting in decreasing of the generating efficiency. In this study, we examined the effect of dopant species in ceria on the thickness of the solid solutions. The thickness of the solid solution was found to depend on the dopant species, indicating that the internal resistance will be controlled by the selection of the dopant element. In terms of electrolyte materials, the electrochemical properties of proton-conducting electrolyte materials were also investigated. The proton-conducting electrolyte with high proton-transport number was found to have the potential to significantly improve electrical efficiency.
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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