| http://www.w3.org/ns/prov#value | - The various electrodes 22, 24, 30 disposed in contact with the solid electrolyte 20 and the porous electrolyte 32 can comprise any catalyst capable of ionizing oxygen, including, but not limited to, noble metal catalysts such as platinum, palladium and others, including mixtures and alloys comprising at least one of these materials.
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