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AssigneesToray Industries, Inc., Japan Vilene Company, Ltd.
InventorsYumiko Okamoto, Daisuke Izuhara, Junpei Yamaguchi, Shusuke Shirai, Tomoyuki Kunita, Hiroaki Umeda, Yuuta Wakamoto, Tatsunori Ito, Noriko Michihata, Takashi Tarao
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A composite polymer electrolyte membrane has a high proton conductivity even under low-humidity, low-temperature conditions, a reduced dimensional change rate, a high mechanical strength and high chemical stability, and produces a solid polymer electrolyte fuel cell with a high output and high physical durability, a membrane electrode assembly, and a solid polymer electrolyte fuel cell containing the same. This composite polymer electrolyte membrane contains a composite layer composed mainly of a polyazole-containing nanofiber nonwoven fabric (A) and an ionic group-containing polymer electrolyte (B), the polyazole-containing nanofiber nonwoven fabric (A) being basic.
A composite polymer electrolyte membrane comprising a composite layer composed mainly of a polyazole-containing nanofiber nonwoven fabric (A) and an ionic group-containing polymer electrolyte (B), the polyazole-containing nanofiber nonwoven fabric (A) being basic, and
A polyazole-containing nanofiber nonwoven fabric that, when examined by emission spectrum analysis, has a ratio (I450/I300) of 0.30 or more and 1.4 or less wherein I450 and I300 are the peak intensities determined under excitation at 450 nm and 300 nm, respectively.
A method of producing polyazole-containing nanofiber nonwoven fabric that, when examined by emission spectrum analysis, shows a ratio (I450/I300) of 0.30 or more and 1.4 or less, and I450 and I300 are the peak intensities determined under excitation at 450 nm and 300 nm, respectively, comprising:
Dependencies are inferred from the claim text.