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Low Temperature Cathode Supported Electrolytes. Report for April 1, 2001-September 30, 2001.

DE2004834069

Publication Date	2001
Personal Author	Anderson, H. U.; Huebner, W.
Page Count	156
Abstract	This project has three main goals: Thin Films Studies, Preparation of Graded Porous Substrates and Basic Electrical Characterization and testing of Planar Single Cells. In this portion of study we have focused on producing YSZ films on porous LSM substrates. When using the polymer precursor there are a number of obstacles to overcome in order to form dense electrolyte layers on porous substrates (cathode or anode). Probably the most difficult problems are: (1) Extreme penetration of the polymer into the substrate must be prevented. (2) Shrinkage cracking must be avoided. (3) Film thickness in the 1 to 5(micro)m range must be achieved. We have demonstrated that cracking due to shrinkage involved during the elimination of solvents and organic matter and densification of the remaining oxide is not a problem as long as the resulting oxide film is < (approx) 0.15 (micro)m in thickness. We have also shown that we can make thicker films by making multiple depositions if the substrate is smooth (roughness (le) 0.1 (micro)m) and contains no surface pores > 0.2 (micro)m.
Keywords	Yttrium oxides Zirconium oxides Cathodes Annealing Cerium oxides Roughness Shrinkage Thin films
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Missouir Univ.-Rolla. Electronic Materials Applied Research Center (EMARC).; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200516

Low Temperature Cathode Supported Electrolytes. Report for April 1, 2001-September 30, 2001.

Low Temperature Cathode Supported Electrolytes. Report for April 1, 2001-September 30, 2001.
DE2004834069

Publication Date	2001
Personal Author	Anderson, H. U.; Huebner, W.
Page Count	156
Abstract	This project has three main goals: Thin Films Studies, Preparation of Graded Porous Substrates and Basic Electrical Characterization and testing of Planar Single Cells. In this portion of study we have focused on producing YSZ films on porous LSM substrates. When using the polymer precursor there are a number of obstacles to overcome in order to form dense electrolyte layers on porous substrates (cathode or anode). Probably the most difficult problems are: (1) Extreme penetration of the polymer into the substrate must be prevented. (2) Shrinkage cracking must be avoided. (3) Film thickness in the 1 to 5(micro)m range must be achieved. We have demonstrated that cracking due to shrinkage involved during the elimination of solvents and organic matter and densification of the remaining oxide is not a problem as long as the resulting oxide film is < (approx) 0.15 (micro)m in thickness. We have also shown that we can make thicker films by making multiple depositions if the substrate is smooth (roughness (le) 0.1 (micro)m) and contains no surface pores > 0.2 (micro)m.
Keywords	Yttrium oxides Zirconium oxides Cathodes Annealing Cerium oxides Roughness Shrinkage Thin films
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Missouir Univ.-Rolla. Electronic Materials Applied Research Center (EMARC).; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200516