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Ink-Jet Printing: A Versatile Method for Multilayer Solid Oxide Fuel Cells Fabrication

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The potential of ink-jet printing for fabrication of components for solid oxide fuel cells has been explored. An anode interlayer, consisting of a composite of NiO and yttria-stabilized zirconia (YSZ), and an electrolyte layer, YSZ (8 mol%), were ink-jet printed on a tape cast anode support, 55 wt% NiO–45 wt% YSZ (8 mol%). Scanning electron microscopy of the printed layers sintered at 1400°C revealed a dense electrolyte layer measuring 10–12 m in thickness. Single cells using these printed layers and strontium-doped lanthanum manganate (LSM, La0.8Sr0.2MnO3)-based pasted cathodes were assessed by DC polarization and AC complex impedance methods. The cells exhibited a stable open circuit voltage of 1.1 V around 800°C, in a hydrogen atmosphere. A maximum power density of 500 m·(W·cm)−2 was achieved at 850°C for a typical cell with the electrolyte and anode interlayer cosintered at 1400°C. A composite cathode interlayer, LSM–YSZ, and a cathode current collection layer, LSM, were also ink-jet printed and incorporated in single cells. However, cells with all components ink-jet printed showed decreased performance. This pointed to critical issues in the composite cathode microstructure, which is controlled by the composite ink design/formulation and printing parameters that need to be addressed.
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Document Type: Research Article

Affiliations: 1: Department of Mechanical and Materials Engineering, Wright State University, Dayton, Ohio 45430 2: The Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, Ohio 45433

Publication date: 2009-12-01

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