Nano-scaled graphene plate films and articles
AssigneeNanotek Instruments, Inc.
InventorsBor Z. Jang, Aruna Zhamu, Jiusheng Guo
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Abstract
Disclosed is a nano-scaled graphene article comprising a non-woven aggregate of nano-scaled graphene platelets wherein each of the platelets comprises a graphene sheet or multiple graphene sheets and the platelets have a thickness no greater than 100 nm (preferably smaller than 10 nm) and platelets contact other platelets to define a plurality of conductive pathways along the article. The article has an exceptional thermal conductivity (typically greater than 500 Wm−1K−1) and excellent electrical conductivity (typically greater than 1,000 S/cm). Thin-film articles of the present invention can be used for thermal management in micro-electronic devices and for current-dissipating on an aircraft skin against lightning strikes.
Claims35
A nano-scaled graphene article comprising a compressed, close packed, non-woven aggregate of nano-scaled graphene platelets wherein each of the platelets comprises a graphene sheet and the platelets have a thickness no greater than 100 nm, and wherein platelets contact other platelets to define a plurality of conductive pathways along the article.
A nano-scaled graphene platelet-containing article comprising a compressed, close packed, non-woven aggregate of nano-scaled graphene platelets to form an electrical network of platelets in contact with other platelets to define a plurality of conductive pathways along the article wherein the article has an electrical conductivity no less than 200 S/cm or a thermal conductivity no less than 400 Wm−1K−1.
A nano-scaled graphene article comprising a compressed, close packed, non-woven aggregate of nano-scaled graphene platelets wherein the aggregate is formed by dispersing nano-scaled graphene platelets in a liquid medium and re-assembling the platelets in a layer by removing the liquid medium, each of the platelets comprises a graphene sheet and the platelets have a thickness not greater than 100 nm, and wherein the compressed aggregate is infiltrated by a binder or matrix material, and the aggregate may additionally include a filler, and wherein the weight fraction of the platelets is not less than 75%.
Dependencies are inferred from the claim text.