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| Low-temperature solid-oxide fuel cells utilizing thin bilayer electrolytes |
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| Author(s): Tsai TP, Perry E, Barnett S |
| Source: JOURNAL OF THE ELECTROCHEMICAL SOCIETY Volume: 144 Issue: 5 Pages: L130-L132 Published: MAY 1997 |
| Times Cited: 48 References: 21 |
| Abstract: Solid-oxide fuel cells (SOFCs) with electrolytes that provide high open-circuit voltage (OCV) and low ohmic loss down to 550 degrees C are described. The electrolytes were bilayers consisting of a 4 to 8 mu m thick Y-doped ceria (YDC) layer with a 1 to 1.5 mu m thick Y-doped zirconia (YSZ) layer on the fuel side. The cathode/supports were La0.95Sr0.15MnO3-YSZ. The anodes consisted of thin YDC and Ni-YSZ layers. The YDC/YSZ electrolyte SOFCs yielded 85 to 98% of the theoretical OCV, compared with approximate to 50% for YDC electrolyte SOFCs. The cathode overpotential, which was a main factor limiting SOFC power density, was lower for YDC/YSZ than YSZ electrolytes. The maximum power density at 600 degrees C, 210 mW/cm(2), is higher than for previously reported SOFCs. |
| Document Type: Article |
| Language: English |
| Reprint Address: Tsai, TP (reprint author), NORTHWESTERN UNIV, DEPT MAT SCI & ENGN, EVANSTON, IL 60208 USA |
| Publisher: ELECTROCHEMICAL SOC INC, 10 SOUTH MAIN STREET, PENNINGTON, NJ 08534 |
| Subject Category: Electrochemistry; Materials Science, Coatings & Films |
| IDS Number: XD006 |
| ISSN: 0013-4651 |
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| | | | | | | | | Record from Web of Science® | | | | | | | | | |