Conditioning effects on La1-xSrxMnO3-Yttria stabilized Zirconia electrodes for thin-film solid oxide fuel cells

Technical Report · Fri Dec 06 00:00:00 EST 2002

DOI:https://doi.org/10.2172/810538· OSTI ID:810538

Lee, You-Kee; Kim, Jung-Yeul; Lee, Young-Ki; Kim, Insoo; Moon, Hee-Soo; Park, Jong-Wan; Jacobson, Craig P; Visco, Steven J

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.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Director, Office of Science (US)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 810538
• Report Number(s): LBNL-51873; R&D Project: 512601; TRN: US200309%%341
• Resource Relation: Other Information: PBD: 6 Dec 2002
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
36 MATERIALS SCIENCE
BONDING
CATHODES
DEPOSITION
ELECTRODES
ELECTROLYTES
IMPEDANCE
MICROSTRUCTURE
PERFORMANCE
SCANNING ELECTRON MICROSCOPY
SOLID OXIDE FUEL CELLS
SPECTROSCOPY
SURFACE CONTAMINATION
COMPOSITE CATHODES COLLOIDAL DEPOSITION TECHNIQUE CONDITIONING EFFECTS IMPEDANCE CHARACTERISTICS