Download Advances in Solid Oxide Fuel Cells VII: Ceramic Engineering by Narottam P. Bansal, Prabhakar Singh, Sujanto Widjaja, Dileep PDF

By Narottam P. Bansal, Prabhakar Singh, Sujanto Widjaja, Dileep Singh

ISBN-10: 1118059891

ISBN-13: 9781118059890

This publication is a suite of papers from the yank Ceramic Society's thirty fifth foreign convention on complex Ceramics and Composites, held in Daytona seashore, Florida, January 23-28, 2011. This factor contains papers awarded within the eighth overseas Symposium on strong Oxide gasoline Cells: fabrics, technology, and expertise on subject matters equivalent to phone and Stack improvement; Electrochemical/Mechanical/Thermal functionality; Electrodes; Interconnects; Novel Cell/Stack layout and Processing; and Reliability/Degradation.Content:

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Additional info for Advances in Solid Oxide Fuel Cells VII: Ceramic Engineering and Science Proceedings, Volume 32

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RT % - = zF-^IA- (5) The interfac e capacitanc e can be easy obtained inserting Eq. (5) in Eq. (3) and taking into account the surface area of catalyst per geometri c area of the electrode : The absolute value of area specific capacitanc e has been estimate d from Eq. 1, 6B\ =10 kJ/mol, S =0,036-0,072 m2/cm2. The estimatio n shows that the T =10"9 mol/cm capacitanc e has to be as high as 100.. 1000 mF/cm2. We suppose that AHg2 doesn’t change very much in temperatur e range 700-850 C and therefor e the capacity is almost independen t on the temperature .

The polarizatio n resistanc e in case of mixed ionic/electroni c conductor depends on both surface exchange and ionic conductivit y according following equation : RT Dv T,- (i - p)

Independen t from scatterin g of propertie s of raw materials . Additional wetting agents were used to improve screen printing characteristic s such as thickness uniformity, which are very important for large area prints required for cathode and anode application . For screen printing commerciall y available sintered electrolyte s with dimensions of 50x50 mm2 made of lOSclCeSZ were used. The thickness of the substrate s varied from 110 urn to 210 um. The electrochemica l experiment s were carried out on the cells with symmetricall y screen-printe d cathode 2 and anode having lateral dimensions of 40x40 mm .

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