Open AccessConditioning effects on La1-xSrxMnO3-Yttria stabilized Zirconia electrodes for thin-film solid oxide fuel cells
Author(s) -
You-Kee Lee,
JungYeul Kim,
Young-Ki Lee,
In-Soo Kim,
Hee-Soo Moon,
Jong-Wan Park,
Craig P. Jacobson,
Steven J. Visco
Publication year - 2002
Language(s) - English
Resource type - Reports
DOI - 10.2172/810538
Subject(s) - yttria stabilized zirconia , materials science , cathode , electrolyte , solid oxide fuel cell , cubic zirconia , dielectric spectroscopy , scanning electron microscope , oxide , chemical engineering , microstructure , electrode , composite material , metallurgy , ceramic , chemistry , electrochemistry , engineering
Composite cathodes of 50/50 vol percent LSM-YSZ (La1-xSrxMnO3-yttria stabilized zirconia) were deposited onto dense YSZ electrolytes by a colloidal deposition technique. The cathode characteristics were then examined by scanning electron microscopy (SEM) and studied by an impedance spectroscopy (IS). Conditioning effects of the LSM-YSZ cathodes were seen, and remedies for these effects were proposed for improving the performance of a solid oxide fuel cell (SOFC). LSM surface contamination and modification, cathode bonding to the YSZ electrolyte, changing Pt electrode and bonding paste, and curvature of sintered YSZ electrolytes led to some changes in microstructure and variability in cell performances