Fuel cell electrode having non-ionomer proton-conducting material

Patent metadata

Field	Value
Publication number	US-9871256-B2
Application number	US-201514613460-A
Country	US
Kind code	B2
Filing date	Feb 4, 2015
Priority date	Feb 4, 2015
Publication date	Jan 16, 2018
Grant date	Jan 16, 2018

Abstract

An active material layers for a fuel cell membrane electrode assembly includes metal oxide particles, a non-ionomer proton conductor and active catalyst particles supported on the metal oxide particles.

First claim

What is claimed is:

1. A fuel cell membrane electrode assembly comprising:
a membrane;
an active material layer formed on opposite sides of the membrane;
a gas diffusion layer for diffusing hydrogen on one active material layer;
a hydrogen source for delivering the hydrogen to the gas diffusion layer;
another gas diffusion layer for diffusing oxidant on another active material layer; and
an oxygen source for delivering the oxidant to the other gas diffusion layer, wherein each active material layer comprises composite particles consisting of:
non-carbon metal oxide support particles;
hydrous ruthenium dioxide as a non-ionomer proton conductor;
active catalyst particles supported on the non-carbon metal oxide support particles; and
a binder, wherein the active material layer comprises no ionomer proton conductor.

2. The fuel cell membrane electrode assembly of claim 1 , wherein the hydrous ruthenium dioxide is supported on the non-carbon metal oxide particles.

3. The fuel cell membrane electrode assembly of claim 1 , wherein the non-carbon metal oxide support particles are titanium dioxide.

4. The fuel cell membrane electrode assembly of claim 1 , wherein the non-carbon metal oxide support particles are Magnéli phase Ti 4 O 7 .

5. The fuel cell membrane electrode assembly of claim 1 , wherein the active catalyst particles are platinum.

Assignees

• Nissan North America Inc

Inventors

• Kumar Amod
• Dale Nilesh

Classifications

• H01M4/8673

  Electrically conductive fillers · CPC title

• H01M4/8663 Primary

  Selection of inactive substances as ingredients for catalytic active masses, e.g. binders, fillers · CPC title

• H01M4/925

  supported on carriers, e.g. powder carriers · CPC title

• H01M4/8605

  Porous electrodes · CPC title

• H01M4/923

  Compounds thereof with non-metallic elements · CPC title