Solid oxide electrolyte with ion conductivity enhancement by...

Details Solid oxide electrolyte with ion conductivity enhancement by... Solid oxide electrolyte with ion conductivity enhancement by...

2007-03-27

2007-03-27

Ryan, Patrick Joseph (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S006000, C428S702000, C204S424000

Reexamination Certificate

active

10449709

ABSTRACT:
Dislocations are fabricated into electrolyte membrane films to increase ion conductivity. Ion and/or electron irradiation causes the growth of vacancy clusters within the thin film and collapsing into Frank dislocation loops that exhibit high ion conductivity. Maximum ion conductivity is accomplished by spatially reorienting the Frank dislocation loops during a following heat-treatment of the membrane. Thereby the dislocation loops form surface-to-surface continuous dislocations along which ions may propagate between membrane surfaces with minimal activation energies. Dislocation densities in the range of 108˜1014cm/cm3may be fabricated with conventional irradiation techniques into ceramics such as, for example yttria stabilized zirconia and doped ceria.

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