Polymer electrolyte membrane, membrane electrode assembly and polymer electrolyte fuel cell
AssigneeAGC Inc.
InventorsTakumi Okuyama, Takeshi Hirai
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Abstract
To provide a polymer electrolyte membrane capable of producing a polymer electrolyte fuel cell excellent in power generation characteristics and excellent in hydrogen gas utilization efficiency, as well as a membrane electrode assembly and a polymer electrolyte fuel cell obtainable by using it. The polymer electrolyte membrane of the present invention comprises a polymer electrolyte, of which the hydrogen gas permeation coefficient under the conditions of a temperature of 80° C. and a relative humidity of 10% is at most 2.4×10−9 cm3·cm/(s·cm2·cmHg) and has a membrane thickness of from 7 to 20 μm.
Claims20
A polymer electrolyte membrane comprising a polymer electrolyte, wherein said membrane has a hydrogen gas permeation coefficient under conditions of a temperature of 80° C. and a relative humidity of 10% of at most 2.4×10−9 cm3·cm/(s·cm2·cmHg), and a thickness of 7 to 20 μm.
Dependencies are inferred from the claim text.