Fuel cell having corrugated membrane electrode assembly

Patent metadata

Field	Value
Publication number	US-11380926-B2
Application number	US-202016993397-A
Country	US
Kind code	B2
Filing date	Aug 14, 2020
Priority date	Aug 14, 2019
Publication date	Jul 5, 2022
Grant date	Jul 5, 2022

Abstract

An electrochemical reaction cell comprising an anode electrode, a cathode electrode, and a membrane electrode assembly (MEA). The MEA is positioned between the anode electrode and the cathode electrode. The anode electrode, the cathode electrode, and the MEA each have a corrugated shape and are contained within a recess of a housing.

First claim

What is claimed is:

1. A membrane electrode assembly (MEA) comprising:
an anode channel;
a cathode channel; and
a membrane positioned between the anode channel and the cathode channel and configured to form an interface therebetween,
wherein each of the anode channel and the cathode channel comprises a rigid plate formed into a corrugated shape, the corrugated shape comprising alternating smooth peaks and valleys,
wherein the anode channel, the membrane, and the cathode channel are configured to engage with each other in a mating relationship in which peaks and valleys of the anode channel match with corresponding peaks and valleys of the cathode channel such that the membrane conforms to the corrugated shape when engaged between the anode channel and the cathode channel, and
wherein the anode channel, the membrane, and the cathode channel are configured to be received within a recess formed in an inner surface of a housing.

2. The MEA of claim 1 , wherein the alternating peaks and valleys of the corrugated shape correspond to two or more sine waves per inch.

3. The MEA of claim 1 , further comprising a pair of gas diffusion layers, wherein the anode channel, the cathode channel, and the membrane are positioned between the gas diffusion layers.

4. The MEA of claim 1 , wherein the membrane comprises electro-spun nanofibers.

5. The MEA of claim 4 , wherein the electro-spun nanofibers of the membrane have a catalyst loaded thereon.

6. The MEA of claim 1 , wherein the anode channel comprises a flow channel plate having a flow channel distributed throughout in a serpentine configuration.

7. The MEA of claim 1 , wherein the anode channel and the cathode channel each comprises a corresponding a current collector configured for providing electrical current to an electrical load.

8. An electrochemical reaction cell comprising:
an anode channel and a cathode channel each having a corrugated shape and configured to supply electric current to an external circuit during operation of the electrochemical reaction cell, wherein each of the anode channel and the cathode channel comprises a rigid plate formed into the corrugated shape, the corrugated shape comprising alternating smooth peaks and valleys, and wherein the peaks and valleys of the anode channel match with corresponding peaks and valleys of the cathode channel in a mating relationship;
a membrane positioned between the anode channel and the cathode channel and configured to form an interface therebetween, wherein the membrane conforms to the corrugated shape when engaged between the anode channel and the cathode channel in the mating relationship;
a housing having a recess formed in an inner surface thereof, the recess receiving the anode channel, the membrane, and the cathode channel therein; and
an electrolyte fluid contained within the housing and in contact with the anode channel and the cathode channel.

9. The electrochemical reaction cell of claim 8 , wherein the alternating peaks and valleys of the corrugated shape correspond to two or more sine waves per inch.

10. The electrochemical reaction cell of claim 8 , wherein the housing comprises two mating endplates assembled together.

11. The electrochemical reaction cell of claim 10 , wherein each of the endplates has a recess therein and includes a plurality of recess walls defining an area of the recess, the recess walls configured to contain the electrolyte fluid.

12. The electrochemical reaction cell of claim 8 , further comprising a pair of gas diffusion layers, wherein the anode channel, the cathode channel, and the membrane are positioned between the gas diffusion layers.

13. The electrochemical reaction cell of claim 8 , wherein the membrane comprises electro-spun nanofibers.

14. The electrochemical reaction cell of claim 13 , wherein the electro-spun nanofibers of the membrane have a catalyst loaded thereon.

15. The electrochemical reaction cell of claim 8 , wherein the anode channel comprises a flow channel plate having a flow channel distributed throughout in a serpentine configuration.

16. The electrochemical reaction cell of claim 8 , wherein the anode channel and the cathode channel each comprises a corresponding a current collector configured for providing electrical current generated in the reaction cell to an electrical load.

Assignees

• Park Jonghyun
• Univ Missouri

Inventors

• Park Jonghyun

Classifications

• H01M8/0293

  Matrices for immobilising electrolyte solutions · CPC title

• H01M8/1006 Primary

  Corrugated, curved or wave-shaped MEA · CPC title

• D01D5/0007 Primary

  Electro-spinning (non-woven fabrics produced by electro-spinning D04H1/728) · CPC title

• H01M8/1011

  Direct alcohol fuel cells [DAFC], e.g. direct methanol fuel cells [DMFC] · CPC title

• H01M8/0263

  having meandering or serpentine paths · CPC title