|About this Abstract
||Materials Science & Technology 2019
||Late News Poster Session
||P2-13: Characterization of the Microstructure Anisotropy during Co-firing in Solid Oxide Fuel Cell Electrodes/Electrolyte
||Shotaro Hara, Sakura Kaneki, Zilin Yan, Naoki Shikazono
|On-Site Speaker (Planned)
Solid oxide fuel cell is one of the most promising energy convention technologies due to its high-power generation efficiency. Its electrochemical performance closely correlates with the three-dimensional microstructure fabricated by the co-sintering process of ceramic powders. In this study, the microstructural change during co-sintering in La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) cathodes and 1mol% CuO added Gadolinium-doped Ceria (GDC) electrolyte are quantitatively characterized utilizing focused ion beam-scanning electron microscopy technique. It shows that the compressive stress within LSCF film arising from the densification rate difference between two layers significantly enhances the densification of LSCF layer, yielding the microstructural anisotropy along the LSCF thickness direction especially at the early stage of co-sintering. The 3D best-fit ellipsoid method reveals that the pores are oriented and elongated in the plane parallel to the substrate.