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Title: 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:
 [1];  [2];  [2]
  1. (Columbus, OH)
  2. (Centerville, OH)
Issue Date:
Research Org.:
Nanotek Instruments, Inc. (Dayton, OH)
Sponsoring Org.:
USDOE
OSTI Identifier:
1015639
Patent Number(s):
7,758,783
Application Number:
11/901,227
Assignee:
Nanotek Instruments, Inc. (Dayton, OH) OSTI
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 = {2010},
month = {7}
}

Patent:

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