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DOE OSTI · 1089409

Recompressed exfoliated graphite articles

Zhamu, Aruna·Shi, Jinjun·Guo, Jiusheng·Jang, Bor Z
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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.

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BibTeXRIS

Zhamu, Aruna, Shi, Jinjun, Guo, Jiusheng, Jang, Bor Z. 2013-08-06. Recompressed exfoliated graphite articles. https://www.osti.gov/biblio/1089409

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