Recompressed exfoliated graphite articles
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.
- Research Organization:
- Nanotek Instruments, Inc. (Dayton, OH)
- Sponsoring Organization:
- USDOE
- Assignee:
- Nanotek Instruments, Inc. (Dayton, OH)
- Patent Number(s):
- 8,501,307
- Application Number:
- 11/899,009
- OSTI ID:
- 1089409
- Country of Publication:
- United States
- Language:
- English
Similar Records
Method of producing exfoliated graphite composite compositions for fuel cell flow field plates
Continious production of exfoliated graphite composite compositions and flow field plates