US 2009/0023018 A1 · Multi-Layered Electrode for Fuel Cell and Method for Producing the Same

Abstract

Disclosed are a multi-layered electrode for fuel cell and a method for producing the same, wherein the electrode can be operated under non-humidification and normal temperature, the flooding of the electrode catalyst layer can be prevented, and the long-term operation characteristic can be increased due to the prevention of the loss of the electrode catalyst layer.

Claims18

Dependent claims

A multi-layered electrode for fuel cell comprising:

a gas diffusing layer 1;
a catalyst layer formed on the gas diffusing layer 1 and applied with a catalyst slurry containing a catalyst 2 and a solution of a nafion ionomer 3 with a specific equivalent weight (EW);
and
a coating layer formed on the catalyst layer and coated with a solution of a nafion ionomer 4 with lower EW than the specific EW of the former nafion ionomer 3.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

11/883,210Filed 31 Oct 2005

Priority

KR 10-2005-000750727 Jan 2005

Published

22 Jan 2009

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

H01M 4/8657
Consisting of more than one material, e.g. consisting of composites: layered
H01M 4/8636
Inert electrodes with catalytic activity, e.g. for fuel cells: with a gradient in another property than porosity
H01M 4/8652
Consisting of more than one material, e.g. consisting of composites: as mixture
H01M 4/8828
Methods for deposition of the catalytic active composition: coating with slurry or ink

Multi-Layered Electrode for Fuel Cell and Method for Producing the Same

Life of this patent

Multi-Layered Electrode for Fuel Cell and Method for Producing the Same

Life of this patent

Abstract

Claims18