Global to push GA events into
skip to main content

Title: Micromold methods for fabricating perforated substrates and for preparing solid polymer electrolyte composite membranes

In polymer electrolyte membrane (PEM) fuel cells and electrolyzes, attaining and maintaining high membrane conductivity and durability is crucial for performance and efficiency. The use of low equivalent weight (EW) perfluorinated ionomers is one of the few options available to improve membrane conductivity. However, excessive dimensional changes of low EW ionomers upon application of wet/dry or freeze/thaw cycles yield catastrophic losses in membrane integrity. Incorporation of ionomers within porous, dimensionally-stable perforated polymer electrolyte membrane substrates provides improved PEM performance and longevity. The present invention provides novel methods using micromolds to fabricate the perforated polymer electrolyte membrane substrates. These novel methods using micromolds create uniform and well-defined pore structures. In addition, these novel methods using micromolds described herein may be used in batch or continuous processing.
Inventors:
; ; ;
Issue Date:
OSTI Identifier:
1374428
Assignee:
GINER, INC. DOEEE
Patent Number(s):
9,728,802
Application Number:
14/120,353
Contract Number:
EE0004533
Resource Relation:
Patent File Date: 2014 May 14
Research Org:
GINER, INC. Newton, MA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Other works cited in this record:

Fluorocarbon vinyl ether polymers
patent, November 1966

Process for using fuel cell with hydrocarbon fuel and platinum-niobium alloy catalyst
patent, January 1969

Rechargeable battery which combats shape change of the zinc anode
patent, August 1976

Wet proofed conductive current collector for the electrochemical cells
patent, July 1980

Electrolytic cell having an improved ion exchange membrane and process for operating
patent, September 1984

Sulfonic acid electrolytic cell membranes and use thereof in the electrolysis of sodium chloride
patent, October 1984

Method of manufacturing a frame-mounted membrane
patent, October 1996

Method for producing porous diamond
patent, February 2002

Process of making a composite membrane
patent, December 2002

Proton exchange membrane (PEM) electrochemical cell having an integral, electrically-conductive, compression pad
patent, December 2002

Solid electrolyte composite for electrochemical reaction apparatus
patent, October 2003

Mixed conducting membrane for carbon dioxide separation and partial oxidation reactions
patent, September 2004

Membrane-electrode assembly for polymer electrolyte fuel cells, and polymer electrolyte fuel cell
patent, April 2009

Apparatus and method for manufacturing microneedles
patent, May 2010

Solid polymer electrolyte composite membrane comprising plasma etched porous support
patent, October 2010

Scratch-resistant optical film
patent, January 2011

Solid polymer electrolyte composite membrane comprising porous ceramic support
patent, May 2011

Fluid pressure imprint lithography
patent-application, September 2002

Catalytic hydrogen vent filter for batteries
patent-application, December 2002

Method of forming a reactive material and article formed thereby
patent-application, July 2003

Layered proton exchange membrane and method for preparing the same
patent-application, July 2004

Fuel cell support structure and method of manufacture
patent-application, February 2005

Polymer electrolyte film and method for preparation of the same, and solid polymer type fuel cell using the same
patent-application, April 2005

Cluster ion exchange membrane and electrolyte membrane electrode connection body
patent-application, May 2005

Microporous filter membrane, method of making microporous filter membrane and separator employing microporous filter membranes
patent-application, December 2005

Solid polymer electrolyte composite membrane comprising laser micromachined porous support
patent-application, March 2006

Solid polymer electrolyte composite membrane comprising plasma etched porous support
patent-application, March 2006

Polymer electrolyte material, polymer electrolyte part, membrane electrode composite and polymer electrolyte type fuel cell
patent-application, August 2006

Porous membrane, method for producing porous membrane, solid polymer electrolyte membrane, and fuel cell
patent-application, October 2009

Ion-permeable membrane and the production thereof
patent-application, March 2010

Solid polymer electrolyte composite membrane comprising a porous support and a solid polymer electrolyte including a dispersed reduced noble metal or noble metal oxide
patent-application, May 2011

Fuel cell production method
patent-application, April 2012

Modified imprinting process using hollow microneedle array for forming through holes in polymers
journal, August 2011
  • Shibata, Takayuki; Yukizono, Satoshi; Kawashima, Takahiro
  • Microelectronic Engineering, Vol. 88, Issue 8, p. 2121-2125
  • DOI: 10.1016/j.mee.2010.12.048

Polymer through-hole membrane fabricated by nanoimprinting using metal molds with high aspect ratios
journal, January 2007
  • Yanagishita, Takashi; Nishio, Kazuyuki; Masuda, Hideki
  • Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures, Vol. 25, Issue 4, Article No. L35
  • DOI: 10.1116/1.2753847

Perforated polymer membranes fabricated by nanoimprint
journal, April 2006
  • Schift, Helmut; Bellini, Sandro; Gobrecht, Jens
  • Microelectronic Engineering, Vol. 83, Issue 4-9, p. 873-875
  • DOI: 10.1016/j.mee.2005.12.027

Similar records in DOepatents and OSTI.GOV collections: