The application of the doped porous ceria and zirconia films by EB-PVD in the electrodes of SOFCs

• Main Authors: Ming-HsiuWu, 吳明修
• Other Authors: Jow-Lay Huang
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/90866399206334502657

博士 === 國立成功大學 === 材料科學及工程學系 === 102 === Yttrium doped porous zirconia film was deposited on 10 at.% samaria doped ceria by electron beam evaporator with assistance of glancing angle technique. La(Sr)MnO3-δ(LSM), La(Sr)CoFeO3-δ(LSCF) and Pt were deposited on it as upper layer to serve as cathode. In the first part, YSZ/LSM bilayer exhibits lower resistance than LSM single layer on thick YSZ plate below 700℃. For intermediate temperature use, SDC plate and LSCF replaced the YSZ plate and LSM, but the power performance was 5.7 mWcm-2 at 600℃. In the second part, the LSCF film deposited by E-beam required further heat treatment, and cobalt oxide formed. For further examining this design, the interface of YSZ/SDC after 1000℃ heat treatment was observed under TEM and EDS. In the final part, different thickness of Pt deposited on YSZ columns with YSZ single crystal substrate, and the obtained highest power density was 20 mWcm-2 at 600℃.