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Method of making MEA for PEM/SPE fuel cell

Patent ·
OSTI ID:873033
 [1]
  1. West Henrietta, NY
+ Show Author Affiliations

A method of making a membrane-electrode-assembly (MEA) for a PEM/SPE fuel cell comprising applying a slurry of electrode-forming material directly onto a membrane-electrolyte film. The slurry comprises a liquid vehicle carrying catalyst particles and a binder for the catalyst particles. The membrane-electrolyte is preswollen by contact with the vehicle before the electrode-forming slurry is applied to the membrane-electrolyte. The swollen membrane-electrolyte is constrained against shrinking in the "x" and "y" directions during drying. Following assembly of the fuel cell, the MEA is rehydrated inside the fuel cell such that it swells in the "z" direction for enhanced electrical contact with contiguous electrically conductive components of the fuel cell.

Research Organization:
GENERAL MOTORS CORP
DOE Contract Number:
AC02-90CH10435
Assignee:
General Motors Corporation (Detroit, MI)
Patent Number(s):
US 6074692
OSTI ID:
873033
Country of Publication:
United States
Language:
English

References (11)

A Nafion�-bound platinized carbon electrode for oxygen reduction in solid polymer electrolyte cells journal May 1989
Thin-film catalyst layers for polymer electrolyte fuel cell electrodes journal January 1992
An experimental prediction of the preparation condition of Nafion-coated catalyst layers for PEFCs journal February 1995
Methods to Advance Technology of Proton Exchange Membrane Fuel Cells journal January 1988
Localization of platinum in low catalyst loading electrodes to to attain high power densities in SPE fuel cells journal September 1988
High Performance Catalyzed Membranes of Ultra-low Pt Loadings for Polymer Electrolyte Fuel Cells journal January 1992
Low platinum loading electrodes for polymer electrolyte fuel cells fabricated using thermoplastic ionomers journal February 1995
High performance electrodes with very low platinum loading for polymer electrolyte fuel cells journal February 1995
New Preparation Method for Polymer-Electrolyte Fuel Cells journal January 1995
Recent advances in solid polymer electrolyte fuel cell technology with low platinum loading electrodes journal February 1990
Preparation of High-Platinum-Utilization Gas Diffusion Electrodes for Proton-Exchange-Membrane Fuel Cells journal January 1992

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Related Subjects

/427/429/
applied
applying
assembly
binder
carrying
catalyst
catalyst particle
catalyst particles
cell
cell comprising
components
comprises
comprising
conductive
constrained
contact
contiguous
direction
directions
directly
drying
electrical
electrical contact
electrically
electrically conductive
electrode-forming
electrolyte film
enhanced
enhanced electrical
film
following
forming material
fuel
fuel cell
inside
liquid
liquid vehicle
material
material directly
mea
membrane-electrode-assembly
membrane-electrolyte
method
particles
pem
preswollen
rehydrated
shrinking
slurry
slurry comprises
spe
spe fuel
swells
swollen
swollen membrane
vehicle
z