Fabrication of Yttria stabilized zirconia thin films on poroussubstrates for fuel cell applications

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A process for the deposition of yttria stabilized zirconia (YSZ) films, on porous substrates, has been developed. These films have possible applications as electrolyte membranes in fuel cells. The films were deposited from colloidal suspensions through the vacuum infiltration technique. Films were deposited on both fully sintered and partially sintered substrates. A critical cracking thickness for the films was identified and strategies are presented to overcome this barrier. Green film density was also examined, and a method for improving green density by changing suspension pH and surfactant was developed. A dependence of film density on film thickness was observed, and ... continued below

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Leming, Andres June 16, 2003.

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Description

A process for the deposition of yttria stabilized zirconia (YSZ) films, on porous substrates, has been developed. These films have possible applications as electrolyte membranes in fuel cells. The films were deposited from colloidal suspensions through the vacuum infiltration technique. Films were deposited on both fully sintered and partially sintered substrates. A critical cracking thickness for the films was identified and strategies are presented to overcome this barrier. Green film density was also examined, and a method for improving green density by changing suspension pH and surfactant was developed. A dependence of film density on film thickness was observed, and materials interactions are suggested as a possible cause. Non-shorted YSZ films were obtained on co-fired substrates, and a cathode supported solid oxide fuel cell was constructed and characterized.

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  • Report No.: LBNL--53450
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 893502
  • Archival Resource Key: ark:/67531/metadc883148

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Office of Scientific & Technical Information Technical Reports

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  • June 16, 2003

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  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 16, 2016, 1:07 p.m.

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Leming, Andres. Fabrication of Yttria stabilized zirconia thin films on poroussubstrates for fuel cell applications, thesis or dissertation, June 16, 2003; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc883148/: accessed October 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.