Solid polymer electrolyte composite membrane comprising laser micromachined porous support
- Waltham, MA
- Lynnfield, MA
- Natick, MA
- Ashland, MA
A solid polymer electrolyte composite membrane and method of manufacturing the same. According to one embodiment, the composite membrane comprises a rigid, non-electrically-conducting support, the support preferably being a sheet of polyimide having a thickness of about 7.5 to 15 microns. The support has a plurality of cylindrical pores extending perpendicularly between opposing top and bottom surfaces of the support. The pores, which preferably have a diameter of about 5 microns, are made by laser micromachining and preferably are arranged in a defined pattern, for example, with fewer pores located in areas of high membrane stress and more pores located in areas of low membrane stress. The pores are filled with a first solid polymer electrolyte, such as a perfluorosulfonic acid (PFSA) polymer. A second solid polymer electrolyte, which may be the same as or different than the first solid polymer electrolyte, may be deposited over the top and/or bottom of the first solid polymer electrolyte.
- Research Organization:
- Giner Electrochemical Systems, LLC (Newton, MA)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG36-04GO13029
- Assignee:
- Giner Electrochemical Systems, LLC (Newton, MA)
- Patent Number(s):
- 7,867,669
- Application Number:
- 10/970,673
- OSTI ID:
- 1013419
- Country of Publication:
- United States
- Language:
- English
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