A Performance Study of Solid Oxide Fuel Cells With BaZr0.1Ce0.7Y0.2O3–δ Electrolyte Developed by Spray-Modified Pressing Method

✍ Scribed by B. Guan; Z. Lü; G. Wang; B. Wei; W. Li; X. Huang

• Publisher: John Wiley and Sons
• Year: 2012
• Tongue: English
• Weight: 356 KB
• Volume: 12
• Category: Article
• ISSN: 1615-6846
• DOI: 10.1002/fuce.201100109

✦ Synopsis

Fuel cells with BaZr 0.1 Ce 0.7 Y 0.2 O 3-d (BZCY) proton-conducting electrolyte is fabricated using spray-modified pressing method. In the present study the spray-modified pressing technology is developed to prepare thin electrolyte layers on porous Ni-BZCY anode supports. SEM data show the BZCY electrolyte film is uniform and dense, well-bonded with the anode substrate. An anode-supported fuel cell with BZCY electrolyte and Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3-d (BSCF) cathode is characterized from 600 to 700 °C using hydrogen as fuel and ambient air as oxidant. Maximum power density of 536 mW cm -2 along with a 1.01 V OCV at 700 °C is obtained. Impedance spectra show that Ohmic resistances contribute minor parts to the total ones, for instance, only ~23% when operating at 600 °C. The results demonstrate that spraymodified pressing technology offers a simple and effective way to fabricate quality electrolyte film suitable to operate in intermediate temperature.