Continious production of exfoliated graphite composite compositions and flow field plates
Abstract
A process of continuously producing a more isotropic, electrically conductive composite composition is provided. The process comprises: (a) continuously supplying a compressible mixture comprising exfoliated graphite worms and a binder or matrix material, wherein the binder or matrix material is in an amount of between 3% and 60% by weight based on the total weight of the mixture; (b) continuously compressing the compressible mixture at a pressure within the range of from about 5 psi or 0.035 MPa to about 50,000 psi or 350 MPa in at least a first direction into a cohered graphite composite compact; and (c) continuously compressing the composite compact in a second direction, different from the first direction, to form the composite composition in a sheet or plate form. The process leads to composite plates with exceptionally high thickness-direction electrical conductivity.
- Inventors:
-
- Columbus, OH
- Centerville, OH
- Issue Date:
- Research Org.:
- Nanotek Instruments, Inc. (Dayton, OH)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1015639
- Patent Number(s):
- 7758783
- Application Number:
- 11/901,227
- Assignee:
- Nanotek Instruments, Inc. (Dayton, OH)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Shi, Jinjun, Zhamu, Aruna, and Jang, Bor Z. Continious production of exfoliated graphite composite compositions and flow field plates. United States: N. p., 2010.
Web.
Shi, Jinjun, Zhamu, Aruna, & Jang, Bor Z. Continious production of exfoliated graphite composite compositions and flow field plates. United States.
Shi, Jinjun, Zhamu, Aruna, and Jang, Bor Z. Tue .
"Continious production of exfoliated graphite composite compositions and flow field plates". United States. https://www.osti.gov/servlets/purl/1015639.
@article{osti_1015639,
title = {Continious production of exfoliated graphite composite compositions and flow field plates},
author = {Shi, Jinjun and Zhamu, Aruna and Jang, Bor Z},
abstractNote = {A process of continuously producing a more isotropic, electrically conductive composite composition is provided. The process comprises: (a) continuously supplying a compressible mixture comprising exfoliated graphite worms and a binder or matrix material, wherein the binder or matrix material is in an amount of between 3% and 60% by weight based on the total weight of the mixture; (b) continuously compressing the compressible mixture at a pressure within the range of from about 5 psi or 0.035 MPa to about 50,000 psi or 350 MPa in at least a first direction into a cohered graphite composite compact; and (c) continuously compressing the composite compact in a second direction, different from the first direction, to form the composite composition in a sheet or plate form. The process leads to composite plates with exceptionally high thickness-direction electrical conductivity.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 20 00:00:00 EDT 2010},
month = {Tue Jul 20 00:00:00 EDT 2010}
}