Anion binder for solid alkaline fuel cell, method of preparing the same and membrane-electrode assembly

Patent metadata

Field	Value
Publication number	US-9306233-B2
Application number	US-201313924840-A
Country	US
Kind code	B2
Filing date	Jun 24, 2013
Priority date	Apr 23, 2013
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

The present invention concerns the preparation of an anion binder for a solid alkaline fuel cell which enhances durability to electrochemical reactions and makes the production of electrode slurry easy. A method of preparing an anion binder for a solid alkaline fuel cell includes: (A) mixing an electrolytic monomer of quaternary ammonium salts having a cation group, a bisacrylicamide crosslinking agent having a tertiary amino group, and water together by stirring; (B) mixing the mixture with a photoinitiator; (C) interposing the solution between polyethylene terephthalate films and irradiating the solution with ultraviolet light for crosslinking and polymerization; and (D) pulverizing crosslinked polymerized resin to a nano size.

First claim

What is claimed is:

1. A method of preparing an anion binder for a solid alkaline fuel cell, the method comprising:
(A) mixing an electrolytic monomer of quaternary ammonium salts having a cation group, a bisacrylicamide crosslinking agent having a tertiary amino group, and water together by stirring;
(B) mixing the mixture with a photoinitiator;
(C) interposing the solution between polyethylene terephthalate films and irradiating the solution with ultraviolet light for crosslinking and polymerization; and
(D) pulverizing crosslinked polymerized resin to a nano size, wherein (D) comprises:
(D1) primarily pulverizing the crosslinked polymerized resin to a size of 40 to 60 μm by a grinding pulverizer; and
(D2) dispersing and secondarily pulverizing the powder obtained in the primary pulverization to a size of 150 to 250 nm by a wet pulverizer.

2. The method of claim 1 , wherein the electrolytic monomer of quaternary ammonium salts having a cation group is vinybenzyl trimethylammonium chloride.

3. The method of claim 1 , wherein the bisacrylicamide crosslinking agent having a tertiary amino group is N,N′-bisacryloylpiperazine.

4. The method of claim 1 , wherein the electrolytic monomer of quaternary ammonium salts, the bisacrylicamide crosslinking agent having a tertiary amino group, and the water are mixed together by stirring at a weight ratio of 60˜75:5˜16:20˜25.

5. The method of claim 1 , wherein the photoinitiator is 2-hydroxy-2-methyl-1-phenyl-1-one.

6. The method of claim 1 , wherein the solution is irradiated with ultraviolet light having an energy of 30 to 150 mJ/cm 2 for crosslinking.

7. The method of claim 1 , wherein 5% by weight of the powder obtained in the primary pulverization is dispersed in a mixed solution of 1-propanol and water at a weight ratio of 9:1 and pulverized.

8. A membrane-electrode assembly which is formed by the binder prepared according to claim 1 .

Assignees

• Korea Energy Research Inst

Inventors

• Choi Young Woo
• Lee Mi Soon
• Yang Tae Hyun
• Kim Chang Soo
• Yoon Young Gi
• Park Seok Hee
• Yim Sung Dae
• Park Gu Gon
• Sohn Young Jun
• Kim Minjin
• Bae Byungchan

Classifications

• H01M8/083 Primary

  Alkaline fuel cells · CPC title

• Y02E60/50

  Fuel cells · CPC title

• H01M4/8668

  Binders · CPC title

• H01M2300/0082

  Organic polymers · CPC title

• Y02P70/56

  Cross-Sectional Technologies · mapped topic