Title:
GRAFTED FUNCTIONAL GROUPS ON EXPANDED TETRAFLUOROETHYLENE (ePTFE) SUPPORT FOR FUEL CELL AND WATER TRANSPORT MEMBRANES
Document Type and Number:
Japanese Patent JP2016146320
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a support and membranes for fuel cells and water vapor transport.SOLUTION: A method comprises: a step a) of providing a solid fluorinated polymer 70; a step b) of contacting the solid fluorinated polymer with a sodium-naphthalenide solution to form a treated fluorinated solid polymer 72; a step c) of contacting the treated fluorinated solid polymer with carbon dioxide, sulfur dioxide or sulfur trioxide to form a solid grafted fluorinated polymer 74; a step d1) of advantageously incorporating the solid grafted fluorinated polymer into a fuel cell 10 as part of an ion-conducting membrane; and a step d2) of incorporating the solid grafted fluorinated polymer into a humidifier 38 as part of a water transport membrane.SELECTED DRAWING: Figure 4
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Inventors:
FULLER TIMOTHY J
JIANG RUICHUN
JIANG RUICHUN
Application Number:
JP2015246988A
Publication Date:
August 12, 2016
Filing Date:
December 18, 2015
Export Citation:
Assignee:
GM GROBAL TECH OPERATIONS LLC
International Classes:
H01M8/02; C08J7/12; C08J9/36; F24F6/00; H01B1/06; H01B1/12; H01M8/04
Domestic Patent References:
| JP2005187629A | 2005-07-14 | |||
| JPH06502781A | 1994-03-31 | |||
| JP2006261043A | 2006-09-28 | |||
| JP2005332801A | 2005-12-02 |
Foreign References:
| US3390067A | 1968-06-25 | |||
| US3632387A | 1972-01-04 |
Attorney, Agent or Firm:
Shinjiro Ono
Yasushi Kobayashi
Shigeo Takeuchi
Osamu Yamamoto
Minako Matsuyama
Yasushi Kobayashi
Shigeo Takeuchi
Osamu Yamamoto
Minako Matsuyama