Highly conductive composites for fuel cell flow field plates and bipolar plates
Abstract
This invention provides a fuel cell flow field plate or bipolar plate having flow channels on faces of the plate, comprising an electrically conductive polymer composite. The composite is composed of (A) at least 50% by weight of a conductive filler, comprising at least 5% by weight reinforcement fibers, expanded graphite platelets, graphitic nano-fibers, and/or carbon nano-tubes; (B) polymer matrix material at 1 to 49.9% by weight; and (C) a polymer binder at 0.1 to 10% by weight; wherein the sum of the conductive filler weight %, polymer matrix weight % and polymer binder weight % equals 100% and the bulk electrical conductivity of the flow field or bipolar plate is at least 100 S/cm. The invention also provides a continuous process for cost-effective mass production of the conductive composite-based flow field or bipolar plate.
- Inventors:
- Issue Date:
- Research Org.:
- Nanotek Instruments, Inc., Dayton, OH (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1160337
- Patent Number(s):
- 8865040
- Application Number:
- 13/021,041
- Assignee:
- Nanotek Instruments, Inc. (Dayton, OH)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08J - WORKING-UP
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01B - CABLES
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2011 Feb 04
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Jang, Bor Z, Zhamu, Aruna, and Song, Lulu. Highly conductive composites for fuel cell flow field plates and bipolar plates. United States: N. p., 2014.
Web.
Jang, Bor Z, Zhamu, Aruna, & Song, Lulu. Highly conductive composites for fuel cell flow field plates and bipolar plates. United States.
Jang, Bor Z, Zhamu, Aruna, and Song, Lulu. Tue .
"Highly conductive composites for fuel cell flow field plates and bipolar plates". United States. https://www.osti.gov/servlets/purl/1160337.
@article{osti_1160337,
title = {Highly conductive composites for fuel cell flow field plates and bipolar plates},
author = {Jang, Bor Z and Zhamu, Aruna and Song, Lulu},
abstractNote = {This invention provides a fuel cell flow field plate or bipolar plate having flow channels on faces of the plate, comprising an electrically conductive polymer composite. The composite is composed of (A) at least 50% by weight of a conductive filler, comprising at least 5% by weight reinforcement fibers, expanded graphite platelets, graphitic nano-fibers, and/or carbon nano-tubes; (B) polymer matrix material at 1 to 49.9% by weight; and (C) a polymer binder at 0.1 to 10% by weight; wherein the sum of the conductive filler weight %, polymer matrix weight % and polymer binder weight % equals 100% and the bulk electrical conductivity of the flow field or bipolar plate is at least 100 S/cm. The invention also provides a continuous process for cost-effective mass production of the conductive composite-based flow field or bipolar plate.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {10}
}
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