Osaka Gas Company Limited

National Institute of Advanced Industrial Science and Technology

Kazuyuki Minami

Mitsuaki Echigo

Hisao Ohnishi

Yuji Tsuda

Kyohei Manabe

Osamu Yamazaki

Norihisa Shinke

Tadayuki Sogi

Jun Akedo

Toshio Suzuki

A metal support for an electrochemical element has a plate shape as a whole, and is provided with a plurality of penetration spacesthat pass through the metal support from a front faceto a back face. The front faceis a face to be provided with an electrode layer. A region of the front faceprovided with the penetration spaces is a hole region, and openings of the penetration spaces formed in the front face are front-side openings. An aperture ratio that is a ratio of the front-side openings to the hole region is 0.1% or more and 7.0% or less.

Metal support for electrochemical element, electrochemical element, electrochemical module, electrochemical device, energy system, solid oxide fuel cell, solid oxide electrolytic cell, and method for manufacturing metal support

An electrochemical module including: a stack obtained by stacking, in a predetermined stacking direction, a plurality of electrochemical elements having a configuration in which an electrode layer, an electrolyte layer, and a counter electrode layer are formed along a substrate, via an annular sealing portion through which first gas that is one of reducing component gas and oxidative component gas flows; a container that includes an upper cover for pressing a first flat face in the stacking direction of the stack and a lower cover for pressing a second flat face on a side opposite to the first flat face, the stack being sandwiched between the upper cover and the lower cover; and a pressing mechanism that presses a portion to which the annular sealing portion is attached against the container in the stacking direction.

Electrochemical module, electrochemical device, and energy system

An electrochemical element including a plate-like support provided with an internal passage therein. The plate-like support includes a gas-permeable portion through which gas is permeable between the internal passage and the outside of the plate-like support and an electrochemical reaction portion that is formed by stacking at least a film-like electrode layer, a film-like electrolyte layer, and a film-like counter electrode layer in the stated order in a predetermined stacking direction on an outer face of the plate-like support so as to entirely or partially cover the gas-permeable portion. A first gas, that is one of reducing component gas and oxidative component gas, flows through the internal passage, and the internal passage is provided with a turbulence forming body that forms a turbulence state of the first gas.

Electrochemical element, electrochemical element stack, electrochemical module, electrochemical device, and energy system

A metal support for an electrochemical element where the metal support includes a plate face, has a plate shape as a whole, and has a warping degree of 1.5×10or less determined by calculating a least square value through the least squares method using at least three points in the plate face of the metal support, calculating a first difference between the least square value and a positive-side maximum displacement value on a positive side with respect to the least square value and a second difference between the least square value and a negative-side maximum displacement value on a negative side that is opposite to the positive side with respect to the least square value, and dividing the sum of the first difference and the second difference by a maximum length of the plate face of the metal support that passes through a center of gravity.

Metal support for electrochemical element, electrochemical element, electrochemical module, electrochemical device, energy system, solid oxide fuel cell, and method for manufacturing metal support

An electrochemical module including, a stack obtained by stacking, in a predetermined stacking direction, a plurality of electrochemical elements having a configuration in which an electrode layer, an electrolyte layer, and a counter electrode layer are formed along a substrate, via an annular sealing portion through which first gas, that is one of reducing component gas and oxidative component gas, flows; a container including an upper cover for pressing a first flat face in the stacking direction of the stack and a lower cover for pressing a second flat face on a side opposite to the first flat face, the stack clamped between the upper cover and the lower cover; an elastic lower plate-like member arranged between the first flat face and the upper cover; and a first gas supply portion and a first gas discharge portion connected to the second flat face in communication with the annular sealing portion.

Provided is a low-cost electrochemical element that includes a high-performance electrode layer. The electrochemical element includes an electrode layer, and the electrode layer contains small particles and large particles. The small particles have a particle diameter of 200 nm or less in the electrode layer, and the large particles have a particle diameter of 500 nm or more in the electrode layer.

Electrochemical element, electrochemical module, solid oxide fuel cell and manufacturing method

A metal support for an electrochemical element has a plate shape as a whole, and is provided with a plurality of penetration spaces that pass through the metal support from a front face to a back face. The front face is a face to be provided with an electrode layer. Each of front-side openings that are openings of the penetration spaces formed in the front face has an area of 3.0&#xd7;10mmor more and 3.0&#xd7;10mmor less.

Provided are a low-cost electrochemical device and the like that have both durability and high performance as well as excellent reliability. The electrochemical device includes at least one metal material, and the metal material is made of a Fe&#x2014;Cr alloy that contains Ti in an amount of more than 0.10 mass % and 1.0 mass % or less.

Electrochemical device, energy system and solid oxide fuel cell

Realized is an element having an electrolyte layer that is dense and has high gas barrier characteristics. A metal-supported electrochemical element includes at least a metal substrate as a support, an electrode layer formed on/over the metal substrate, a buffer layer formed on the electrode layer, and an electrolyte layer formed on the buffer layer. The electrode layer is porous and the electrolyte layer is dense. The buffer layer has density higher than density of the electrode layer and lower than density of the electrolyte layer.

Metal-supported electrochemical element, solid oxide fuel cell and method of manufacturing such metal-supported electrochemical element

Realized are a high-performance electrochemical element and solid oxide fuel cell in which the contact properties between a dense and highly-gastight electrolyte layer and an electrode layer are improved while the treatment temperature during formation of the electrolyte layer is suppressed to a low temperature, and methods for producing the same. An electrochemical element includes an electrode layer, and an electrolyte layerarranged on the electrode layer, wherein the electrode layerhas a plurality of pores that are open on a face thereof in contact with the electrolyte layer, and the pores are filled with fine particles made of the same components as the electrolyte layer

Electrochemical element, solid oxide fuel cell, and methods for producing the same

Realized are an electrochemical element and a solid oxide fuel cell that have a dense electrolyte layer and that have excellent durability and robustness, and methods for producing the same. An electrochemical element includes: a metal substratehaving a plurality of through holes; an electrode layerprovided over a front face of the metal substrate; and an electrolyte layerprovided over the electrode layer, wherein the through holesare provided passing through the front face and a back face of the metal substrate, the electrode layeris provided in a region larger than a region, of the metal substrate, in which the through holesare provided, and the electrolyte layerhas a first portioncoating the electrode layer, and a second portionthat is in contact with the front face of the metal substrate

Growing community of inventors

Osaka, Japan

Kazuyuki Minami