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Increased solid-oxide fuel cell power density using interfacial ceria layers

✍ Scribed by Tsepin Tsai; Scott A Barnett

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 394 KB
Volume: 98
Category: Article
ISSN: 0167-2738
DOI: 10.1016/s0167-2738(97)00113-6

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✦ Synopsis

Solid-oxide fuel cell power densities typically drop rapidly as the operating temperature is decreased, due to electrolyte ohmic losses and / or electrode overpotentials. In this paper, we describe fuel cells utilizing 8 mm thick yttria-stabilized zirconia (YSZ) electrolytes to provide low ohmic loss. Adding thin porous yttria doped ceria (YDC) layers on either side of the YSZ yielded much-reduced interfacial resistances at both the LSM cathodes and Ni-YSZ anodes. The cells provide 22 higher power densities than previously reported below 7008C, e.g. 300 and 480 mW cm at 600 and 6508C, respectively 22

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