Recompressed exfoliated graphite articles

Zhamu, Aruna; Shi, Jinjun; Guo, Jiusheng; Jang, Bor Z

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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:: Zhamu, Aruna; Shi, Jinjun; Guo, Jiusheng; Jang, Bor Z

Issue Date:: Tue Aug 06 00:00:00 EDT 2013

Research Org.:: Nanotek Instruments, Inc. (Dayton, OH)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1089409

Patent Number(s):: 8501307

Application Number:: 11/899,009

Assignee:: Nanotek Instruments, Inc. (Dayton, OH)

Patent Classifications (CPCs):: H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01B - CABLES

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H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01B - CABLES
H01B1/04 - mainly consisting of carbon-silicon compounds, carbon or silicon

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Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

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                    Zhamu, Aruna, Shi, Jinjun, Guo, Jiusheng, and Jang, Bor Z. Recompressed exfoliated graphite articles.  United States: N. p., 2013. 
        Web.

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                    Zhamu, Aruna, Shi, Jinjun, Guo, Jiusheng, & Jang, Bor Z. Recompressed exfoliated graphite articles.  United States.

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                    Zhamu, Aruna, Shi, Jinjun, Guo, Jiusheng, and Jang, Bor Z. Tue .  
        "Recompressed exfoliated graphite articles".  United States.  https://www.osti.gov/servlets/purl/1089409.

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@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         = {Tue Aug 06 00:00:00 EDT 2013},

  month        = {Tue Aug 06 00:00:00 EDT 2013}

}

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Works referenced in this record:

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Similar Records

Title: Recompressed exfoliated graphite articles

Abstract

Citation Formats

Method for producing composite objects using expanded graphite and vermiculite patent-application, January 2007

Housing for electrical or electronic equipment patent, July 1985

Laminated fluid flow field assembly for electrochemical fuel cells patent, April 1994

Conductive composite material and fuel cell electrode using same patent-application, February 2004

Bipolar plate/diffuser for a proton exchange membrane fuel cell patent, March 2000

Flexible graphite composite for use in the form of a fuel cell flow field plate patent, March 2000

Graphite article having predetermined anisotropic characteristics and process therefor patent-application, November 2002

Reinforced flexible graphite sheet patent, March 1988

Bipolar plate/diffuser for a proton exchange membrane fuel cell patent, January 2001

Fuel cell separator, process for production thereof, and polymer electrolyte fuel cell patent, September 2005

Highly conductive thermoplastic composites for rapid production of fuel cell bipolar plates patent-application, November 2004

Impregnated bodies made of expanded graphite, process for producing such bodies and sealing elements, fuel cell components and heat-conducting elements formed of the bodies patent, June 2004

Conductive composite material and electrode for fuel cell using said material formed by thermo-compression patent, December 2006

Exfoliated graphite fibers and associated method patent, April 1990

Separator for fuel cell, process for production thereof, and solid polymer type fuel cell using said separator patent, April 2005

Low-density graphite-polymer electrical conductors patent, November 1987

Flexible graphite composite patent, March 1999

Conductive resin molding patent-application, June 2005

Flexible graphite article and method of manufacture patent, August 2002

Methacrylate impregnated carbonaceous parts patent-application, November 2001

Composite bipolar plate for electrochemical cells patent, June 2001

Flexible graphite article and method of manufacture patent, March 2004

Highly conductive nano-scaled graphene plate nanocomposites and products patent-application, July 2007

Method of fabricating an embossed fluid flow field plate patent, June 1996

Vermicular expanded graphite composite material patent, May 1981

Composites of in-situ exfoliated graphite patent, August 1990

Battery cathode including a mixture of manganese dioxide with carbon particles of expanded and non-expanded graphite patent, September 2002

Method for producing composite objects using expanded graphite and vermiculite
patent-application, January 2007

Housing for electrical or electronic equipment
patent, July 1985

Laminated fluid flow field assembly for electrochemical fuel cells
patent, April 1994

Conductive composite material and fuel cell electrode using same
patent-application, February 2004

Bipolar plate/diffuser for a proton exchange membrane fuel cell
patent, March 2000

Flexible graphite composite for use in the form of a fuel cell flow field plate
patent, March 2000

Graphite article having predetermined anisotropic characteristics and process therefor
patent-application, November 2002

Reinforced flexible graphite sheet
patent, March 1988

Bipolar plate/diffuser for a proton exchange membrane fuel cell
patent, January 2001

Fuel cell separator, process for production thereof, and polymer electrolyte fuel cell
patent, September 2005

Highly conductive thermoplastic composites for rapid production of fuel cell bipolar plates
patent-application, November 2004

Impregnated bodies made of expanded graphite, process for producing such bodies and sealing elements, fuel cell components and heat-conducting elements formed of the bodies
patent, June 2004

Conductive composite material and electrode for fuel cell using said material formed by thermo-compression
patent, December 2006

Exfoliated graphite fibers and associated method
patent, April 1990

Separator for fuel cell, process for production thereof, and solid polymer type fuel cell using said separator
patent, April 2005

Low-density graphite-polymer electrical conductors
patent, November 1987

Flexible graphite composite
patent, March 1999

Conductive resin molding
patent-application, June 2005

Flexible graphite article and method of manufacture
patent, August 2002

Methacrylate impregnated carbonaceous parts
patent-application, November 2001

Composite bipolar plate for electrochemical cells
patent, June 2001

Flexible graphite article and method of manufacture
patent, March 2004

Highly conductive nano-scaled graphene plate nanocomposites and products
patent-application, July 2007

Method of fabricating an embossed fluid flow field plate
patent, June 1996

Vermicular expanded graphite composite material
patent, May 1981

Composites of in-situ exfoliated graphite
patent, August 1990

Battery cathode including a mixture of manganese dioxide with carbon particles of expanded and non-expanded graphite
patent, September 2002