|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Energy Materials 2017: Materials for Energy Conversion with Emphasis on SOFC
||Investigation on Cathode Interlayer and Electrolyte for Improving Electric Power Efficiency of SOFCs
||Takaaki Somekawa, Yoshio Matsuzaki, Yuya Tachikawa, Hiroshige Matsumoto, Shunsuke Taniguchi, Kazunari Sasaki
|On-Site Speaker (Planned)
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.
||Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)