Mukhopadhyay, Jayanta and Basu, Rajendra Nath (2014) Spray Pyrolysis Assisted Synthesis of Doped Barium Ferrite and Lanthanum Barium Ferrite-based SOFC Cathodes with Tailored Particulate Size and Morphology. In: SOLID OXIDE FUEL CELLS 13 (SOFC-XIII), OCT 06-11, 2013, Okinawa, JAPAN.

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Abstract

Doped barium ferrite Ba(1-x)SrxCo(1-y)FeyO(3-delta) (BSCF) 0 < x = 0.5, y = 0.2 and 0.8] and lanthanum barium ferrite Ba1-x-mLaxSrm Co1-yFeyO3-delta (LBSCF); (x + m) = 0.75, m = 0.5, y = 0.2 and 0.8] based SOFC cathode with tailored particulate size and morphology are synthesized by spray pyrolysis. Near-net to spherical shape nano to micro particulates (100 nm - 5 mu m) with in-built meso and micro porosity are prepared either by direct pyrolysis or by in-situ growth of nanoparticulates inside the reactor through homomolecular nucleation. Symmetric cells with optimized cathode particulate size, morphology and electrical conductivity reduce interfacial polarizations down to 0.048 Omega cm(2) and 0.014 Omega cm(2) at 700 degrees C and consequently enhance the current densities to 1.8 Acm(-2) and 2.2 Acm(-2) (0.7 V, 700 degrees C) with hydrogen and air for BSCF and LBSCF respectively. Microstructures of such cathodes are correlated with augmented cell performances for short and long term operation.

Item Type:	Conference or Workshop Item (Paper)
Additional Information:	13th International Symposium on Solid Oxide Fuel Cells (SOFC-XIII), Okinawa, JAPAN, OCT 06-11, 2013
Subjects:	Electronics
Divisions:	Fuel Cell and Battery
Depositing User:	Bidhan Chaudhuri
Date Deposited:	10 Jun 2015 07:26
Last Modified:	11 Mar 2016 17:46
URI:	http://cgcri.csircentral.net/id/eprint/2831

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