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-11545673-B2
Application number	US-202016837549-A
Country	US
Kind code	B2
Filing date	Apr 1, 2020
Priority date	Jul 25, 2019
Publication date	Jan 3, 2023
Grant date	Jan 3, 2023

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 an electrolyte membrane for a fuel cell, comprising:
applying a catalyst composition comprising a catalyst complex and an ionomer solution on a release sheet;
providing a porous reinforcement layer on the applied catalyst composition;
impregnating pores in the porous reinforcement layer with the catalyst composition; and
heat-treating the catalyst composition,
wherein the catalyst complex comprises metal catalyst particles and support particles having the metal catalyst particles attached to a surface thereof;
wherein the support particles comprises a first ionomer and the ionomer solution comprises a second ionomer.

2. The method of claim 1 , wherein the impregnating comprises:
impregnating a lower portion of the porous reinforcement layer with the catalyst composition applied on the release sheet; and
impregnating an upper portion of the porous reinforcement layer with the catalyst composition by applying the catalyst composition on the impregnated porous reinforcement layer.

3. The electrolyte membrane of claim 1 , wherein the electrolyte membrane comprises an amount of about 0.05 to 3 wt % of the catalyst complex based on a total weight of the electrolyte membrane.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

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

Classifications

• H01M4/8814

  Temporary supports, e.g. decal · CPC title

• Y02E60/50

  Fuel cells · CPC title

• H01M8/1069

  characterised by the manufacturing processes · CPC title

• H01M4/8892

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

• H01M2008/1095

  Fuel cells with polymeric electrolytes · CPC title