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Title: Grafted functional groups on expanded tetrafluoroethylene (ePTFE) support for fuel cell and water transport membranes

Abstract

A method for forming a modified solid polymer includes a step of contacting a solid fluorinated polymer with a sodium sodium-naphthalenide solution to form a treated fluorinated solid polymer. The treated fluorinated solid polymer is contacted with carbon dioxide, sulfur dioxide, or sulfur trioxide to form a solid grafted fluorinated polymer. Characteristically, the grafted fluorinated polymer includes appended CO.sub.2H or SO.sub.2H or SO.sub.3H groups. The solid grafted fluorinated polymer is advantageously incorporated into a fuel cell as part of the ion-conducting membrane or a water transport membrane in a humidifier.

Inventors:
;
Publication Date:
Research Org.:
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1340532
Patent Number(s):
9,553,327
Application Number:
14/586,132
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC (Detroit, MI) DOEEE
DOE Contract Number:  
EE0000470
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Dec 30
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Fuller, Timothy J., and Jiang, Ruichun. Grafted functional groups on expanded tetrafluoroethylene (ePTFE) support for fuel cell and water transport membranes. United States: N. p., 2017. Web.
Fuller, Timothy J., & Jiang, Ruichun. Grafted functional groups on expanded tetrafluoroethylene (ePTFE) support for fuel cell and water transport membranes. United States.
Fuller, Timothy J., and Jiang, Ruichun. Tue . "Grafted functional groups on expanded tetrafluoroethylene (ePTFE) support for fuel cell and water transport membranes". United States. doi:. https://www.osti.gov/servlets/purl/1340532.
@article{osti_1340532,
title = {Grafted functional groups on expanded tetrafluoroethylene (ePTFE) support for fuel cell and water transport membranes},
author = {Fuller, Timothy J. and Jiang, Ruichun},
abstractNote = {A method for forming a modified solid polymer includes a step of contacting a solid fluorinated polymer with a sodium sodium-naphthalenide solution to form a treated fluorinated solid polymer. The treated fluorinated solid polymer is contacted with carbon dioxide, sulfur dioxide, or sulfur trioxide to form a solid grafted fluorinated polymer. Characteristically, the grafted fluorinated polymer includes appended CO.sub.2H or SO.sub.2H or SO.sub.3H groups. The solid grafted fluorinated polymer is advantageously incorporated into a fuel cell as part of the ion-conducting membrane or a water transport membrane in a humidifier.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 24 00:00:00 EST 2017},
month = {Tue Jan 24 00:00:00 EST 2017}
}

Patent:

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