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Title: Recompressed exfoliated graphite articles

Abstract

This invention provides an electrically conductive, less anisotropic, recompressed exfoliated graphite article comprising a mixture of (a) expanded or exfoliated graphite flakes; and (b) particles of non-expandable graphite or carbon, wherein the non-expandable graphite or carbon particles are in the amount of between about 3% and about 70% by weight based on the total weight of the particles and the expanded graphite flakes combined; wherein the mixture is compressed to form the article having an apparent bulk density of from about 0.1 g/cm.sup.3 to about 2.0 g/cm.sup.3. The article exhibits a thickness-direction conductivity typically greater than 50 S/cm, more typically greater than 100 S/cm, and most typically greater than 200 S/cm. The article, when used in a thin foil or sheet form, can be a useful component in a sheet molding compound plate used as a fuel cell separator or flow field plate. The article may also be used as a current collector for a battery, supercapacitor, or any other electrochemical cell.

Inventors:
; ; ;
Publication Date:
Research Org.:
Nanotek Instruments, Inc. (Dayton, OH)
Sponsoring Org.:
USDOE
OSTI Identifier:
1089409
Patent Number(s):
8,501,307
Application Number:
11/899,009
Assignee:
Nanotek Instruments, Inc. (Dayton, OH) DOESC
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Zhamu, Aruna, Shi, Jinjun, Guo, Jiusheng, and Jang, Bor Z. Recompressed exfoliated graphite articles. United States: N. p., 2013. Web.
Zhamu, Aruna, Shi, Jinjun, Guo, Jiusheng, & Jang, Bor Z. Recompressed exfoliated graphite articles. United States.
Zhamu, Aruna, Shi, Jinjun, Guo, Jiusheng, and Jang, Bor Z. Tue . "Recompressed exfoliated graphite articles". United States. https://www.osti.gov/servlets/purl/1089409.
@article{osti_1089409,
title = {Recompressed exfoliated graphite articles},
author = {Zhamu, Aruna and Shi, Jinjun and Guo, Jiusheng and Jang, Bor Z},
abstractNote = {This invention provides an electrically conductive, less anisotropic, recompressed exfoliated graphite article comprising a mixture of (a) expanded or exfoliated graphite flakes; and (b) particles of non-expandable graphite or carbon, wherein the non-expandable graphite or carbon particles are in the amount of between about 3% and about 70% by weight based on the total weight of the particles and the expanded graphite flakes combined; wherein the mixture is compressed to form the article having an apparent bulk density of from about 0.1 g/cm.sup.3 to about 2.0 g/cm.sup.3. The article exhibits a thickness-direction conductivity typically greater than 50 S/cm, more typically greater than 100 S/cm, and most typically greater than 200 S/cm. The article, when used in a thin foil or sheet form, can be a useful component in a sheet molding compound plate used as a fuel cell separator or flow field plate. The article may also be used as a current collector for a battery, supercapacitor, or any other electrochemical cell.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {8}
}

Patent:

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