Electrochemical cell and electrochemical apparatus

Patent metadata

Field	Value
Publication number	US-10971735-B2
Application number	US-201816174564-A
Country	US
Kind code	B2
Filing date	Oct 30, 2018
Priority date	Oct 31, 2017
Publication date	Apr 6, 2021
Grant date	Apr 6, 2021

Abstract

An electrochemical cell according to one embodiment includes a solid electrolyte layer having insulating property, a first electrode, and a second electrode. The solid electrolyte layer has a first face and a second face, and allows ions to move therethrough. The first electrode is one of an anode and a cathode and provided on the first face. The first electrode includes an inside channel that allows gas to flow, a third face into which a first open end of the channel opens, a fourth face into which a second open end of the channel opens, and an inner wall face that defines the channel. The second electrode is the other of the anode and the cathode and provided on the second face.

First claim

What is claimed is:

1. An electrochemical cell, comprising:
a solid electrolyte layer having a first face and a second face, the solid electrolyte layer having insulating property and allowing ions to move therethrough;
a first electrode being one of an anode and a cathode, the first electrode being provided on the first face, the first electrode provided with an inside channel, the first electrode including a third face, a fourth face, and an inner wall face, the channel through which gas passes, the third face into which a first open end of the channel opens, the fourth face into which a second open end of the channel opens, the inner wall face that defines the channel; and
a second electrode being the other of the anode and the cathode, the second electrode being provided on the second face, wherein
the channel includes a plurality of unit passages that have the same shape or similar shapes and communicate with one another,
the first electrode includes a plurality of unit walls that are connected to one another in three directions perpendicular to one another, include at least part of the inner wall face, and form the plurality of unit passages,
the plurality of unit passages communicate with one another in the three directions by connecting the plurality of unit walls to one another in the three directions,
the plurality of unit walls have a same shape or similar shapes and form a three-dimensional periodic minimal surface that can be connected infinitely in the three directions,
the plurality of unit walls have a gyroid shape, and
the inner wall face includes a plurality of protrusions that protrudes to inside of the channel.

2. The electrochemical cell according to claim 1 , wherein
the first electrode includes a plurality of layers laminated in a first direction intersecting the first face, and
the protrusions are located at an end of the layers in a second direction that is along the first face.

3. The electrochemical cell according to claim 1 , wherein
the third face is oriented in a third direction intersecting a direction in which the first face is oriented, and
the fourth face is oriented in a fourth direction intersecting the direction in which the first face is oriented.

4. The electrochemical cell according to claim 1 , wherein
the third face is opposite the fourth face, and
the channel includes a part that linearly passes between the third face and the fourth face.

5. The electrochemical cell according to claim 1 , wherein
the first electrode includes a plurality of particles coupled to one another with a void in-between between the particles, and
the channel has an average sectional area larger than an average sectional area of the void.

6. The electrochemical cell according to claim 5 , wherein the void allows the gas to pass through.

7. An electrochemical cell comprising:
a solid electrolyte layer having a first face and a second face, the solid electrolyte layer having insulating property and allowing ions to move therethrough;
a first electrode being one of an anode and a cathode, the first electrode being provided on the first face, the first electrode provided with an inside channel, the first electrode including a third face, a fourth face, and an inner wall face, the channel through which gas passes, the third face into which a first open end of the channel opens, the fourth face into which a second open end of the channel opens, the inner wall face that defines the channel; and
a second electrode being the other of the anode and the cathode, the second electrode being provided on the second face, wherein
the channel includes a plurality of unit passages that have the same shape or similar shapes and communicate with one another,
the first electrode includes a plurality of unit walls that are connected to one another in three directions perpendicular to one another, include at least part of the inner wall face, and form the plurality of unit passages,
the plurality of unit passages communicate with one another in the three directions by connecting the plurality of unit walls to one another in the three directions,
the plurality of unit walls have a same shape or similar shapes and form a three-dimensional periodic minimal surface that can be connected infinitely in the three directions,
the plurality of unit walls have a gyroid shape,
the first electrode includes a plurality of laminated layers, and
a length between both ends of the channel in a laminated direction of the layers is larger than a thickness of each of the layers.

8. An electrochemical apparatus, comprising:
the electrochemical cell according to claim 1 ; and
a supplier that supplies gas to the channel.

9. The electrochemical cell according to claim 1 , wherein each of the unit walls is connected to another unit wall in an X direction, is connected to another unit wall in a Y direction perpendicular to the X direction, and is connected to another unit wall in a Z direction perpendicular to the X direction and the Y direction.

10. The electrochemical apparatus according to claim 8 , wherein each of the unit walls is connected to another unit wall in a X direction, is connected to another unit wall in a Y direction perpendicular to the X direction, and is connected to another unit wall in a Z direction perpendicular to the X direction and the Y direction.

Assignees

• Toshiba Kk

Inventors

• Hadame Yasuaki
• Tanaka Masayuki
• Akaishi Naoya
• Terada Takahiro
• Nakata Shinji

Classifications

• Y02P20/133

  Renewable energy sources, e.g. sunlight · CPC title

• H01M8/04007

  related to heat exchange · CPC title

• Y02E60/50

  Fuel cells · CPC title

• H01M4/8621

  containing only metallic or ceramic material, e.g. made by sintering or sputtering · CPC title

• Y02E60/36

  Hydrogen production from non-carbon containing sources, e.g. by water electrolysis · CPC title