Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7715660 | International Journal of Hydrogen Energy | 2015 | 9 Pages |
Abstract
A flat tubular segmented in series (SIS)-SOFC was fabricated with variable cathode thicknesses and the performance characteristics were analyzed. Vacuum slurry dip coating and screen printing technique were employed to coat the NiO-Ce1ScSZ10 anode, Ce1ScSZ10 electrolyte, and La0.6Sr0.4Co0.2Fe0.8 cathode on the extruded 3YSZ ceramic support. A sub module consisting of 5-cell with a total active electrode area of 4 cm2 was interconnected in series using Ag-glass composite. Electrochemical performance analysis was conducted between 600 and 800 °C using 300 CC/min. 3 vol.% humidified hydrogen fuel and 1500 CC/min. air as oxidant. The results obtained from electrochemical impedance spectroscopy and current-voltage polarization curves revealed a 57 μm thick cathode layer as the optimum thickness. An application of LSCo as the cathode current collector on the surface of the cathode enhanced the performance by approximately 30% at 750 °C.
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Authors
Usman Mushtaq, Dae-Wi Kim, Ui-Jin Yun, Jong-Won Lee, Seung-Bok Lee, Seok-Joo Park, Rak-Hyun Song, Guntae Kim, Tak-Hyoung Lim,