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Perovskite materials for solid oxide fuel cell cathodes
An improved LSCF 6428 perovskite material of the type La 12z Sr x+z Co 0.2+a Fe 0.8+b O 3-´ wherein x = 0.4, z = (0 - 0.1), a = (.01 0.04), and b = (0.05 0.15) for use as an SOFC cathode having increased electronic and ionic conductivity. The general formula is similar to the prior art formulae (La 0.6 Sr 0.4 ) 1-z CO 0.2 Fe 0.8 O 3-´ and La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-´ but applies the z term to La and Sr independently as well as reducing the overall content of La. Further, by adding a small amount (a) of extra Co ions, catalytic activity, conductivity, and sinterability are further enhanced. Adding small amounts (b) of Fe and/or Fe and Co moderates the thermal expansion coefficient with no adverse effect on crystal structure or fuel cell performance. Improved sinterability, microstructure, and reduced film cracking result in high power density of fuel cells. An inherently low-cost solid state reaction method is described.
Perovskite materials for solid oxide fuel cell cathodes
An improved LSCF 6428 perovskite material of the type La 12z Sr x+z Co 0.2+a Fe 0.8+b O 3-´ wherein x = 0.4, z = (0 - 0.1), a = (.01 0.04), and b = (0.05 0.15) for use as an SOFC cathode having increased electronic and ionic conductivity. The general formula is similar to the prior art formulae (La 0.6 Sr 0.4 ) 1-z CO 0.2 Fe 0.8 O 3-´ and La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-´ but applies the z term to La and Sr independently as well as reducing the overall content of La. Further, by adding a small amount (a) of extra Co ions, catalytic activity, conductivity, and sinterability are further enhanced. Adding small amounts (b) of Fe and/or Fe and Co moderates the thermal expansion coefficient with no adverse effect on crystal structure or fuel cell performance. Improved sinterability, microstructure, and reduced film cracking result in high power density of fuel cells. An inherently low-cost solid state reaction method is described.
Perovskite materials for solid oxide fuel cell cathodes
Perowskit-Materialien für Festoxidbrennstoffzellenkathoden
Matériaux de pérovskite pour cathodes de pile à combustible d'oxyde solide
JAIN KAILASH CHANDRA (Autor:in) / KELLER JOSEPH MICHAEL (Autor:in) / KERR RICK DANIEL (Autor:in)
15.08.2018
Patent
Elektronische Ressource
Englisch
IPC:
H01M
Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie
,
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
/
B01J
Chemische oder physikalische Verfahren, z.B. Katalyse oder Kolloidchemie
,
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
/
C01G
Verbindungen der von den Unterklassen C01D oder C01F nicht umfassten Metalle
,
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
/
C04B
Kalk
,
LIME
Synthesis and characterisation of materials for solid oxide fuel cell cathodes
| British Library Online Contents | 2006
Synthesis and characterisation of materials for solid oxide fuel cell cathodes
| British Library Online Contents | 2006
Functionally graded cathodes for solid oxide fuel cells
| British Library Online Contents | 2001
| British Library Online Contents | 2006