GRAPHENE FIBER AND METHOD OF MANUFACTURING THE SAME
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United States of America Patent
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Issued Date -
Mar 5, 2015
app pub date -
Nov 20, 2013
filing date -
Sep 2, 2013
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Abandoned
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Abstract
The present invention discloses a graphene fiber and a method of manufacturing the same. The graphene fiber is manufactured by oxidizing graphite, dispersing, spinning, drying and heat treatment, and has a diameter less than 100 μm, a ratio of length to diameter greater than 10, and a ratio of carbon to oxygen greater than 5. The graphene fiber is formed of a plurality of graphene sheets, which envelop an axis and are coaxially stacked one by one from the axis. The thickness of the graphene sheet is less than 3 nm, and chemical bonds are formed to tightly bond the graphene sheets to exhibit excellent mechanical and thermally/electrically conductive properties. The method of the present invention is implemented by simple steps so as to greatly reduce poisonous chemicals possibly generated in the manufacturing environment, thereby improving the safety of manufacturing and reducing the whole processing time and cost.
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