CARBONACEOUS MATERIAL, PROCESS FOR PRODUCING CARBONACEOUS MATERIAL, PROCESS FOR PRODUCING EXFOLIATED GRAPHITE, AND EXFOLIATED GRAPHITE
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United States of America Patent
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Issued Date -
Oct 17, 2013
app pub date -
Nov 28, 2011
filing date -
Nov 29, 2010
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Abandoned
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Abstract
Provided are a carbonaceous material with less variation in facing relation between graphenes, a process for producing the carbonaceous material, a process for producing exfoliated graphite that enables easy and massive production of graphite flaked more than ever, and the exfoliated graphite. The carbonaceous material contains an intercalation substance intercalated between graphenes of a graphene stack and is expanded graphite which shows in an XRD pattern respective peaks in 7-12° and 18-24° ranges of 2θ and in which a peak in 25-27° range has a smaller height than that in 18-24° range and a half width of the peak in 7-12° range is 4 degrees or less. The process for producing the carbonaceous material includes immersing at least a portion of sheet-like graphite or sheet-like pre-expanded graphite into an aqueous electrolyte solution to subject the graphite to an electrochemical treatment. The process for producing exfoliated graphite includes the step of applying an exfoliation force to the carbonaceous material to obtain exfoliated graphite. The exfoliated graphite is obtained by this production process.
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