Ngk Insulators, Inc.

Risako Ito

Makoto Ohmori

Takashi Ryu

Masayuki Shinkai

Hirofumi Kan

Yuki Tanaka

A cell stack device includes a manifold and a fuel cell. The manifold includes a gas supply chamber and a gas collection chamber. The fuel cell includes a support substrate and a power generation element portion. The support substrate includes first and second gas channels. The first gas channel is connected to the gas supply chamber, and the second gas channel is connected to the gas collection chamber. The first gas channel is open in the gas supply chamber at a proximal end portion. The second gas channel is open in the gas collection chamber at a proximal end portion. The first and second gas channels are connected to each other on the distal end portion side. The first and second gas channels are configured such that a pressure loss of gas in the first gas channel is smaller than a pressure loss of gas in the second gas channel.

Fuel cell and cell stack device

An electrochemical device includes an electrochemical cell, an oxidizer gas supply portion, and a first contaminant trap portion. The electrochemical cell includes an anode, a cathode, and a solid electrolyte layer provided between the fuel cell and the cathode. The oxidizer gas supply portion includes an oxidizer gas supply port for supplying oxidizer gas to the cathode. The first contaminant trap portion is provided between the cathode and the oxidizer gas supply port and configured to adsorb contaminants contained in the oxidizer gas. At least part of the first contaminant trap portion is disposed 20 mm or less from the oxidizer gas supply port in a gas supply direction in which the oxidizer gas is supplied from the oxidizer gas supply port.

Electrochemical device

A fuel cell has an anode, a cathode active portion that exhibits oxygen ion conductivity and electron conductivity, a cathode current collecting portion that is disposed on the cathode active portion and that exhibits a higher electron conductivity than the cathode active portion, and a contaminant trap portion that is disposed on the cathode current collecting portion and exhibits oxygen ion conductivity and electron conductivity.

Electrochemical cell with contaminant trap portion, and electrochemical device including same

A fuel cell device includes an electrochemical cell, an oxidizer gas supply portion, and a contaminant trap portion. An oxidizer gas supply portion has an oxidizer gas supply port for supplying an oxidizer gas to the cathode. A contaminant trap portion is disposed on a portion of the cathode on the side with the oxidizer gas supply port and exhibits oxygen ion conductivity and electron conductivity.

A fuel cell stack () includes a first supporting substrate (), a first power generation element, a second power generation element, a second supporting substrate () and a communicating member (). The first supporting substrate () includes a first substrate main portion, a first dense layer, and a first gas flow passage. The first dense layer covers the first substrate main portion. The second supporting substrate () includes a second substrate main portion, a second dense layer, and a second gas flow passage. The second dense layer covers the second substrate main portion. The communicating member () extends between a distal end portion () of the first supporting substrate () and a distal end portion () of the second supporting substrate () and communicates between the first gas flow passage and the second gas flow passage.

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Nagoya, Japan

Risako Ito