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

Abstract

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:
Research Org.:
GINER, INC. Newton, MA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1374428
Patent Number(s):
9728802
Application Number:
14/120,353
Assignee:
GINER, INC.
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS
B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29K - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
DOE Contract Number:  
EE0004533
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 May 14
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Mittelsteadt, Cortney, Argun, Avni, Laicer, Castro, and Willey, Jason. Micromold methods for fabricating perforated substrates and for preparing solid polymer electrolyte composite membranes. United States: N. p., 2017. Web.
Mittelsteadt, Cortney, Argun, Avni, Laicer, Castro, & Willey, Jason. Micromold methods for fabricating perforated substrates and for preparing solid polymer electrolyte composite membranes. United States.
Mittelsteadt, Cortney, Argun, Avni, Laicer, Castro, and Willey, Jason. Tue . "Micromold methods for fabricating perforated substrates and for preparing solid polymer electrolyte composite membranes". United States. https://www.osti.gov/servlets/purl/1374428.
@article{osti_1374428,
title = {Micromold methods for fabricating perforated substrates and for preparing solid polymer electrolyte composite membranes},
author = {Mittelsteadt, Cortney and Argun, Avni and Laicer, Castro and Willey, Jason},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {8}
}

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