skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Membrane-electrode assemblies for electrochemical cells

Abstract

A combination, unitary, membrane and electrode assembly with a solid polymer electrolyte membrane, and first and second electrodes at least partially embedded in opposed surfaces of the membrane. The electrodes each comprise a respective group of finely divided carbon particles, very finely divided catalytic particles supported on internal and external surfaces of the carbon particles and a proton conductive material intermingled with the catalytic and carbon particles. A first group of finely divided carbon particles forming the first electrode has greater water attraction and retention properties, and is more hydrophilic than a second group of carbon particles forming the second electrode. In a preferred method, the membrane electrode assembly of the invention is prepared by forming a slurry of proton conductive material and at least one group of the carbon and catalyst particles. The slurry is applied to the opposed surfaces of the membrane and heated while being pressed to the membrane for a time and at a temperature and compressive load sufficient to embed at least a portion of the particles into the membrane.

Inventors:
 [1];  [2]
  1. (Troy, MI)
  2. (Sterling Heights, MI)
Issue Date:
Research Org.:
GENERAL MOTORS CORP
OSTI Identifier:
869084
Patent Number(s):
5272017
Assignee:
General Motors Corporation (Detroit, MI) OSTI
DOE Contract Number:  
AC02-90CH10435
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
membrane-electrode; assemblies; electrochemical; cells; combination; unitary; membrane; electrode; assembly; solid; polymer; electrolyte; electrodes; partially; embedded; opposed; surfaces; comprise; respective; finely; divided; carbon; particles; catalytic; supported; internal; external; proton; conductive; material; intermingled; forming; water; attraction; retention; properties; hydrophilic; preferred; method; prepared; slurry; catalyst; applied; heated; pressed; time; temperature; compressive; load; sufficient; embed; portion; opposed surfaces; membrane electrode; external surface; electrolyte membrane; preferred method; catalyst particles; electrode assembly; electrochemical cells; conductive material; electrochemical cell; polymer electrolyte; solid polymer; finely divided; carbon particles; compressive load; retention properties; load sufficient; particles supported; opposed surface; external surfaces; divided carbon; partially embedded; membrane-electrode assemblies; catalyst particle; electrode assemblies; /429/

Citation Formats

Swathirajan, Sundararajan, and Mikhail, Youssef M. Membrane-electrode assemblies for electrochemical cells. United States: N. p., 1993. Web.
Swathirajan, Sundararajan, & Mikhail, Youssef M. Membrane-electrode assemblies for electrochemical cells. United States.
Swathirajan, Sundararajan, and Mikhail, Youssef M. Fri . "Membrane-electrode assemblies for electrochemical cells". United States. https://www.osti.gov/servlets/purl/869084.
@article{osti_869084,
title = {Membrane-electrode assemblies for electrochemical cells},
author = {Swathirajan, Sundararajan and Mikhail, Youssef M.},
abstractNote = {A combination, unitary, membrane and electrode assembly with a solid polymer electrolyte membrane, and first and second electrodes at least partially embedded in opposed surfaces of the membrane. The electrodes each comprise a respective group of finely divided carbon particles, very finely divided catalytic particles supported on internal and external surfaces of the carbon particles and a proton conductive material intermingled with the catalytic and carbon particles. A first group of finely divided carbon particles forming the first electrode has greater water attraction and retention properties, and is more hydrophilic than a second group of carbon particles forming the second electrode. In a preferred method, the membrane electrode assembly of the invention is prepared by forming a slurry of proton conductive material and at least one group of the carbon and catalyst particles. The slurry is applied to the opposed surfaces of the membrane and heated while being pressed to the membrane for a time and at a temperature and compressive load sufficient to embed at least a portion of the particles into the membrane.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {1}
}

Patent:

Save / Share: