Kabushiki Kaisha Toshiba

Intematix Corporation

Taishi Fukazawa

Wu Mei

Yoshihiko Nakano

Yoshihiro Akasaka

Itsuko Mizutani

Tsuyoshi Kobayashi

Takahiro Sato

Norihiro Yoshinaga

Shigeru Matake

Yi-Qun Li

Shinji Aoki

Katsuyuki Naito

Yuta Kanai

Mina Farag

Jun Tamura

Ryosuke Yagi

Hiroyasu Sumino

Tianyi Yang

Masaaki Yamamoto

Tomoko Eguchi

Hiroki Hiraga

Masato Akita

Kazuhiro Yasuda

Hiroaki Hirazawa

Jungmin Song

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

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

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.

Catalyst-supporting substrate, method of manufacturing the same, membrane electrode assembly, and fuel cell

According to one embodiment, an electrochemical cell includes an anode, a cathode and an electrolytic membrane interposed therebetween. At least one of the anode and the cathode is formed of an integral solid conductive plate and includes a first surface in contact with the electrolytic membrane and a second surface apart from the first surface in a thickness direction. The at least one of the anode and the cathode includes a plurality of first pores opened in the first surface and a plurality of second pores opened in the second surface, the second pores communicating with a part of the first pores. The first pores are smaller than the second pores, and the concentration of pores in the first surface is higher than that in the second surface.

Electrochemical cell, oxygen reduction device using the cell and refrigerator using the oxygen reduction device

A catalyst layer includes a layered structure. The layered structure is laminated with sheet-like unit catalysts and pore layers. The sheet-like unit catalysts have mean thicknesses of 4 to 30 nm. The pore layers are sandwiched between the sheet-like unit catalysts.

Catalyst layer, membrane electrode assembly, and electrochemical cell

A catalyst layer containing a catalyst material, the catalyst layer having a porosity of 20 to 90% by vol and satisfying a relation: R1&#x2267;R0&#xd7;1.2, wherein R1 is an alignment ratio of the catalyst layer; and R0 is an alignment ratio of the catalyst material in powder form having a random crystalline plane distribution, and each of the alignment ratios is calculated from a X-ray diffraction spectrum having a diffraction angle 2&#x3b8; range from 10 to 90 degree measured using Cu-K&#x3b1;-rays.

A direct methanol fuel cell includes a cathode catalyst layer; an electrolyte membrane; an anode catalyst layer; a first fuel control layer that is water-repellent and conductive and that has pores; a second fuel control layer that is water-repellent and conductive and that has larger pores than the those of the first fuel control layer; a third fuel control layer that is water-repellent and conductive and that has smaller porous than those of the first fuel control layer and those of the second fuel control layer; and an anode GDL layer that is water-repellent and conductive, wherein the membrane and the layers above are arranged in the above order.

Direct methanol fuel cell

According to one embodiment, an anode for a direct methanol fuel cell includes an anode catalyst layer containing a noble metal catalyst and a proton-conductive polyelectrolyte. A log differential pore volume distribution curve measured by a mercury intrusion porosimetry of the anode catalyst layer has a peak within a pore diameter range of 0.06 to 0.3 &#x3bc;m and satisfies the following relationship:0.5&#x2266;()&#x2266;0.9

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Fuchu, Japan

Taishi Fukazawa