Samsung Sdi Co., Inc.

Asahi Kasei Kabushiki Kaisha

Daikin Industries, Ltd.

Takahiro Tago

Hiroyuki Nishide

Atsuo Sonai

Hiroko Endo

Tetsuya Murakami

Kuon Miyazaki

Kazuhiro Ohtsuka

Masahiro Kondo

Tadashi Ino

Yuichi Inoue

Naoto Miyake

Takashi Yoshimura

Teruyuki Okayasu

Atsuo Sonal

A method for producing an electrolyte solution including a supply step of continuously supplying an emulsion based a polymer electrolyte and a solvent into a dissolution facility, and a dissolution step of continuously dissolving the polymer electrolyte in the solvent by heating the interior of the dissolution facility to obtain the electrolyte solution.

Electrolyte solution and method for producing same, continuously dissolving facility, electrolyte membrane, electrode catalyst layer, membrane electrode assembly and fuel cell

A polymer electrolyte membrane of the present disclosure comprises a perfluorosulfonic acid resin (A), wherein the polymer electrolyte membrane has a phase-separation structure having a phase where fluorine atoms are detected in majority and a phase where carbon atoms are detected in majority, in an image of a membrane surface observed under an SEM-EDX, and the polymer electrolyte membrane has a phase having an average aspect ratio of 1.5 or more and 10 or less in an image of a membrane cross-section observed under an SEM.

Polymer electrolyte membrane, membrane electrode assembly, and solid polymer electrolyte fuel cell

The present invention aims to provide an ionomer that can exhibit high oxygen permeability, especially under both low- and high-humidified conditions, and high power generation durability. The high oxygen permeable ionomer includes a specific repeating unit A and repeating unit B and has an equivalent weight of 250 to 930 and a glass transition temperature of 100&#xb0; C. to 130&#xb0; C.

Ionomer having high oxygen permeability

A proton conductive polymer electrolyte includes an acidic functional group-containing aromatic hydrocarbon polymer and an electron donor functional group-containing compound. When used in a fuel cell, the proton conductive polymer electrolyte provides a long-term stable power generating performance at an operating temperature from 100&#xb0; C. to 200&#xb0; C. in non-humidified conditions or a relative humidity of 50% or less.

Proton conductive polymer electrolyte and fuel cell including the same

The present teachings encompass proton-conductive material comprising a new polymer compound. A proton-conductive electrolyte comprising the proton-conductive material, and a fuel cell comprising the proton-conductive electrolyte are disclosed. A proton-conductive material comprising poly(phosphophenylene oxide) that comprises polyphenylene oxide as the main chain, and at least one phosphonic acid group as a side chain of the main chain, a proton-conductive electrolyte comprising the proton-conductive material, and a fuel cell employing the proton-conductive electrolyte, are also disclosed.

Proton-conductive material, proton-conductive electrolyte for fuel cell comprising the material and fuel cell employing the electrolyte

Aspects of the present invention provide a proton conductive electrolyte suitable for a fuel cell material and a fuel cell including the proton conductive electrolyte. More particularly, aspects of the present invention provide a proton conductive electrolyte that has good proton conductivity and can be used to form a membrane having good flexibility. As a result, the proton conductive electrolyte can be used in a fuel cell, the electrolyte membrane of a fuel cell or the electrodes thereof, and can provide a solid polymer fuel cell having high current density, high power and long life-time in a dry environment (relative humidity of 50% or less) at an operating temperature of 100 to 200&#xb0; C.

Proton conductive electrolyte and fuel cell comprising the same

The invention provides a proton-conducting electrolyte that has excellent proton-conducting properties, heat resistance, and chemical stability without containing any fluorine. The proton-conducting electrolyte contains polyamide sulfamidic acid in which a polyamide backbone has side chains of sulfamidic acid groups. The polyamide sulfamidic acid may be represented by the formula: where Arand Arare each an aromatic ring or a group containing an aromatic ring and n is the average degree of polymerization and is an integer between 100-300,000.

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Tokyo, Japan

Takahiro Tago