Kabushiki Kaisha Toshiba

Intematix Corporation

Wu Mei

Yoshihiko Nakano

Taishi Fukazawa

Yoshihiro Akasaka

Itsuko Mizutani

Tsuyoshi Kobayashi

Norihiro Yoshinaga

Jun Tamura

Takahiro Sato

Shigeru Matake

Mutsuki Yamazaki

Atsuko Iida

Yi-Qun Li

Shinji Aoki

Yuta Kanai

Mina Farag

Katsuyuki Naito

Hideyuki Ohzu

Tianyi Yang

Masashi Sahashi

Satoshi Mikoshiba

Masaaki Yamamoto

Shinya Sakurada

Akiko Saito

Seiichi Suenaga

Takao Sawa

Kohei Nakayama

Maki Yonetsu

Tomoko Eguchi

Hiroki Hiraga

Shinichi Onodera

Hiroyasu Sumino

Akihiko Tsutai

Miho Maruyama

Toshiya Sakamoto

A catalyst laminate includes a plurality of catalyst layers containing at least one of a noble metal and an oxide of the noble metal and at least one of a non-noble metal and an oxide of the non-noble metal, including:

Catalyst laminate, membrane electrode assembly, electrochemical cell, stack, water electrolyzer, and hydrogen utilizing system

A laminated electrolyte membrane of an embodiment includes: a first electrolyte membrane; a second electrolyte membrane; and a nanosheet laminated catalyst layer provided between the first electrolyte membrane and the second electrolyte membrane and including a laminated structure in which a plurality of nanosheet catalysts is laminated with a gap.

Laminated electrolyte membrane, membrane electrode assembly, water electrolysis cell, stack, water electrolyzer, and hydrogen utilizing system

According to an embodiment, a laminated catalyst includes a first catalyst layer mainly including a noble metal mainly containing Pt, a second catalyst layer mainly including a mixture of an oxide of a noble metal mainly containing Ir and Ru and a noble metal mainly containing Pt, and a third catalyst layer mainly including an oxide of a noble metal mainly containing Ir and Ru The first catalyst layer, the second catalyst layer, and the third catalyst layer are laminated in order.

Laminated catalyst, electrode, membrane electrode assembly, electrochemical cell, stack, fuel cell and water electrolysis reversible device, vehicle, and flying object

An electrode of an embodiment includes a catalyst layer having pores. A mode diameter of the pores is&#x3bc;m or more and&#x3bc;m or less. The catalyst layer may have a thickness of&#x3bc;m or more and&#x3bc;m or less. A value of the mode diameter of the pores may three times or more a value of a thickness of the catalyst layer.

Electrode, membrane electrode assembly, electrochemical cell, stack, fuel cell, vehicle and flying object

An electrode for a fuel cell according to an embodiment of an embodiment includes: a catalyst layer having a noble metal catalyst unit that has a porous structure or a layer-by-layer structure including void layers and a hydrophilic material; a porous water management layer arranged adjacent to the catalyst layer and including a hydrophilic material and a conductive material; and a gas diffusion layer arranged adjacent to the porous water management layer, where a size of the noble metal catalyst unit is equal to or more than 0.05 &#x3bc;m and equal to or less than 2 &#x3bc;m, the porosity of the porous water management layer is equal to or more than 30 vol % and equal to or less than 85 vol %, and the hydrophilicity thereof is equal to or more than 0.05 and equal to or less than 1.

Electrode for fuel cell, membrane electrode complex body for fuel cell, and fuel cell

A catalyst of an embodiment includes a porous structure including aggregates of particles containing Ru and metal atoms M different from Ru. The particles are a metal oxide. A metal atom ratio of the metal atom M in a surface region of the porous structure is higher than that of the metal atom M in the porous structure as a whole.

Catalyst, anode, membrane electrode assembly, water electrolysis cell, stack, water electrolyzer, and hydrogen utilizing system

An electrode includes a base material, and a catalyst layer provided on the base material, the catalyst layer including a plurality of catalyst units having a porous structure. The catalyst layer has a first catalyst layer provided near the base material, the first catalyst layer including a plurality of the catalyst units dispersed at a first dispersion degree. The catalyst layer has a second catalyst layer provided above the first catalyst layer, the second catalyst layer including a plurality of the catalyst units dispersed at a second dispersion degree. The second dispersion degree is different from the first dispersion degree.

Electrode, membrane electrode assembly, electrochemical cell, and stack

According to an embodiment, a porous catalyst layer includes a metal portion including plural noble metal-including sheets stacked apart from each other, and a porous nanocarbon layer disposed between two adjacent noble metal-including sheets. The plural noble metal-including sheets in the metal portion have an integrated portion. The porous nanocarbon layer includes fibrous nanocarbon.

Porous catalyst layer, membrane electrode assembly, and electrochemical cell

Embodiments of the present disclosure aim to provide a catalyst layer ensuring a high cell voltage and having both excellent robustness and sufficient endurance, and also to provide a process for producing the layer, a membrane electrode assembly and an electrochemical cell. The catalyst layer comprises two or more noble metal-containing layers, and a porous ceramic layer placed between the noble metal-containing layers. Further, in the catalyst layer, voids exist between the porous ceramic layer and the noble metal-containing layers.

Catalyst layer, method for producing the same, membrane electrode assembly and electrochemical cell

A membrane electrode assembly of an embodiment includes: a first electrode having a first base, and a first catalyst layer provided on the first base, the first catalyst layer including a plurality of first catalyst units with a laminated structure, and the laminated structure including void layers; and an electrolyte membrane being in direct contact with both first surfaces of the first catalyst units facing each other among the first catalyst units, and second surfaces of the first catalyst units on the opposite side from the first base side. A portion is included where the electrolyte membrane exists over a region being at least 80% of a thickness of the first catalyst layer from the second surfaces of the first catalyst units toward the first base.

Membrane electrode assembly, electrochemical cell, stack, fuel cell, and vehicle

In one embodiment, a membrane electrode assembly comprises a catalyst layer being porous and containing a catalyst material, the catalyst layer comprising a plurality of catalyst units each having a porous body structure or a laminated structure containing a void layer, and an electrolyte membrane adjacent to the porous catalyst layer. The catalyst unit bites into the electrolyte membrane, and an average biting ratio is not less than 10%, and not more than 80% of a thickness of the catalyst layer.

Membrane electrode assembly and electrochemical cell

An electrode of an embodiment includes a base material, and a catalyst layer provided on the base material and having a porous structure. When a sum of heights of all peaks belonging to Ir oxide is I0, the height of a peak of IrO(110) is I1, and the height of a peak of IrO(211) is I2, a ratio of (I1+I2)/I0, which is a ratio of spectra obtained by X-ray diffraction measurements using K&#x3b1; rays of Cu in the catalyst layer, is 50% or more and 100% or less in a range of a diffraction angle of 20 degrees or more and 70 degrees or less.

According to an aspect of the present invention, there is provided a collector membercomprising a sheet-shaped base materialhaving a carbon-containing fiberand catalyst particlesadhered to an outer periphery of the fibercontaining a noble metal or an alloy thereof, and having an average particle diameter of 0.1 to 2 &#x3bc;m.

Collector member, power generator, and method of manufacturing collector member for power generator

According to one embodiment, the noble metal catalyst layer includes first noble metal layer and a second noble metal layer formed on the first noble metal layer. The first noble metal layer includes a first noble metal element and has a porosity of 65 to 95 vol. %, a volume of pores having a diameter of 5 to 80 nm accounts for 50% or more of a volume of total pores in the first noble metal layer. The second noble metal layer includes a second noble metal element, and has an average thickness of 3 to 20 nm and a porosity of 50 vol. % or less.

Noble metal catalyst layer, membrane electrode assembly, and method for producing noble metal catalyst layer

According to one embodiment, a catalyst-supporting substrate comprises a substrate and a catalyst layer including a plurality of pores, the catalyst layer being supported on the substrate. The average diameter of the section of the pore when the catalyst is cut in the thickness direction of the thickness is 5 nm to 400 nm, and the long-side to short-side ratio of the pore on the section is 1:1 to 10:1 in average.

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Yokohama, Japan

Wu Mei