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Scale Up and Anode Development for La ‐Doped SrTiO 3 Anode‐Supported SOFC s
Author(s) -
Savaniu CristianDaniel,
Miller David N.,
Irvine John T. S.
Publication year - 2013
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.12325
Subject(s) - anode , materials science , strontium titanate , solid oxide fuel cell , chemical engineering , nickel , oxide , scanning electron microscope , titanate , ceramic , hydrogen fuel , catalysis , hydrogen , doping , fuel cells , nanotechnology , metallurgy , composite material , thin film , electrode , chemistry , optoelectronics , biochemistry , engineering , organic chemistry
The possibility of developing large solid oxide fuel cell ( SOFC ) stacks based upon 25 cm 2 ceramic oxide anode‐supported cells is investigated. Planar fuel cells comprising strontium titanate‐based anode support impregnated with active catalysts were prepared using a combination of deposition techniques. The fuel cell tests performed in a semisealed rig have shown power densities of 185 mW cm −2 at 850°C using humidified hydrogen as fuel and air as oxidant. The structure and evolution of the catalytically active impregnated materials‐10 mol% Gd ‐doped CeO 2 and nickel‐ are analysed using electron microscopy at the end of the fuel cell test, revealing that a ceria and nickel layer surrounds the titanate backbone grains while ~50–150 nm spherical‐like nickel particles uniformly decorate this top layer.