Catalyst complex for fuel cell, method of manufacturing the catalyst complex, electrolyte membrane including the catalyst complex and method of manufacturing the electrolyte membrane

Patent metadata

Field	Value
Publication number	US-12009528-B2
Application number	US-202217992120-A
Country	US
Kind code	B2
Filing date	Nov 22, 2022
Priority date	Jul 25, 2019
Publication date	Jun 11, 2024
Grant date	Jun 11, 2024

Abstract

Disclosed are a catalyst complex and a method of manufacturing the same. The catalyst complex may be manufactured by uniformly depositing metal catalyst particles on pretreated support particles through an atomic layer deposition process using a fluidized-bed reactor, which may be then uniformly dispersed throughout the ionomer solution. As such, manufacturing costs may be reduced due to the use of a small amount of metal catalyst particles and the durability of an electrolyte membrane and OCV may increase. Further disclosed are a method of manufacturing the catalyst complex, an electrolyte membrane including the catalyst complex, and a method of manufacturing the electrolyte membrane.

First claim

What is claimed is:

1. A method of manufacturing a catalyst complex for a fuel cell, comprising:
preparing support particles containing a functional group; and
manufacturing a catalyst complex by attaching metal catalyst particles to the support particles,
wherein the support particles comprise an ionomer, and
wherein the support particles are prepared by steps comprising:
dispersing the support particles in an aqueous solution comprising an acid and performing acid treatment, washing, filtration and heat treatment; or
placing the support particles in a reactor and adding ozone (O 3 ) thereto.

2. The method of claim 1 , wherein the support particles comprise a hydroxyl functional group.

3. The method of claim 1 , wherein the catalyst complex is manufactured by steps comprising:
reacting the support particles with a metal catalyst precursor.

4. The method of claim 1 , wherein the metal catalyst particles are attached to the support particles in a fluidized-bed reactor.

5. The method of claim 4 , wherein in the fluidized-bed reactor, a pressure is of about 0.1 to 5 torr and a temperature is of about 150 to 200° C.

6. The method of claim 4 , wherein a purging gas and a reactive gas are introduced into the fluidized-bed reactor.

7. The method of claim 6 , wherein the purging gas is introduced at a flow rate of about 50 to 200 sccm and the reactive gas is introduced at a flow rate of about 10 to 200 sccm.

8. The method of claim 1 , wherein the catalyst complex comprises an amount of about 5 to 20 wt % of the metal catalyst particles, based on the total weight of the catalyst complex.

9. The method of claim 1 , wherein the catalyst complex is manufactured by steps comprising:
providing the support particles in a fluidized-bed reactor;
supplying a metal catalyst precursor into the fluidized-bed reactor to thus bring the support particles into contact with the metal catalyst precursor;
introducing a purging gas into the fluidized-bed reactor;
introducing a reactive gas into the fluidized-bed reactor; and
re-introducing a purging gas into the fluidized-bed reactor,
wherein a cycle comprising the step of the introducing the reactive gas and the step of the re-introducing the purging gas is repeated once or more.

Assignees

• Hyundai Motor Co Ltd
• Kia Corp

Inventors

• Oh Seung Jeong
• Hong Woong Pyo
• Kim Byoung Su
• Kim Min Kyung
• Park Soon Hong
• Kim Yong Min

Classifications

• H01M8/102

  characterised by the chemical structure of the main chain of the ion-conducting polymer · CPC title

• H01M8/1081

  starting from solutions, dispersions or slurries exclusively of polymers · CPC title

• H01M4/8892

  Impregnation or coating of the catalyst layer, e.g. by an ionomer · CPC title

• H01M2250/20

  Fuel cells in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M8/1004

  characterised by membrane-electrode assemblies [MEA] (H01M8/12 takes precedence) · CPC title