Electrolytic cell and hydrogen production apparatus

Patent metadata

Field	Value
Publication number	US-10760167-B2
Application number	US-201816190515-A
Country	US
Kind code	B2
Filing date	Nov 14, 2018
Priority date	Nov 15, 2017
Publication date	Sep 1, 2020
Grant date	Sep 1, 2020

Abstract

An electrolytic cell includes a housing, a first diaphragm, a first electrode, a second electrode, and a first discharge port. The housing held an electrolyte solution. The first diaphragm partitions the interior of the housing into a first cell and a second cell. The first electrode is provided inside the first cell. The first electrode includes a first surface facing the first diaphragm, a second surface different from the first surface, and a first hole. The second electrode is provided inside the second cell adjacent to the first diaphragm. The second electrode includes a third surface adjacent to the first diaphragm, a fourth surface different from the third surface, and a second hole. The first discharge port discharges the electrolyte solution from the second cell. The first cell is configured to supply the electrolyte solution supplied therein to the third surface side of the second cell.

First claim

What is claimed is:

1. An electrolytic cell, comprising:
a housing configured to hold an electrolyte solution;
a first diaphragm configured to partition an interior of the housing into a first cell and a second cell;
a second diaphragm configured to partition an interior of the first cell into a third cell and a fourth cell;
a first electrode provided inside the first cell, the first electrode comprising a first surface facing the first diaphragm, a second surface different from the first surface, and a first hole configured to distribute the electrolyte solution between the first surface side and the second surface side;
a second electrode provided inside the second cell adjacent to the first diaphragm, the second electrode comprising a third surface adjacent to the first diaphragm, a fourth surface different from the third surface, and a second hole configured to distribute the electrolyte solution between the third surface side and the fourth surface side; and
a first discharge port configured to discharge the electrolyte solution from the second cell, wherein
the first electrode is provided inside the third cell, the first surface of the first electrode being provided adjacent to the second diaphragm,
the first cell is configured to supply the electrolyte solution supplied therein to the third surface side of the second cell,
the fourth cell is provided between the first diaphragm and the second diaphragm, and
the fourth cell is configured to be supplied with the electrolyte solution.

2. The electrolyte cell according to claim 1 , wherein the first electrode is a positive electrode, and the second electrode is a negative electrode.

3. The electrolytic cell according to claim 1 , further comprising:
a second discharge port configured to discharge the electrolyte solution from the third cell, the electrolyte solution is distributed to the second surface side of the third cell through the first hole.

4. The electrolytic cell according to claim 3 , wherein
the second cell is configured to be supplied with the electrolyte solution distributed only through the second hole, and
the third cell is configured to be supplied with the electrolyte solution distributed only through the first hole.

5. A hydrogen production apparatus, comprising:
the electrolytic cell according to claim 1 ;
an electrolyte solution tank configure to reserve the electrolyte solution; and
an electrolyte supply configure to supply the electrolyte solution to the fourth cell from the electrolyte solution tank.

Assignees

• Toshiba Kk

Inventors

• Murayama Hirotoshi

Classifications

• C25B9/21

  two or more diaphragms · CPC title

• C25B1/04 Primary

  by electrolysis of water · CPC title

• C25B11/03 Primary

  perforated or foraminous · CPC title

• C25B9/19

  with diaphragms · CPC title

• C25B11/031

  Porous electrodes · CPC title