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  • 专利标题:   Making graphene sheet useful in e.g. electronic transistors involves combining graphitic oxide with solvent comprising ethanol; mixing reductant and graphitic oxide solution; depositing mixture on substrate; and heating the mixture.
  • 专利号:   US2011281035-A1, US8728578-B2
  • 发明人:   RAFAILOVICH M, ISSEROFF R, DAS P M
  • 专利权人:   RAFAILOVICH M, ISSEROFF R, DAS P M, UNIV NEW YORK STATE RES FOUND
  • 国际专利分类:   B05D003/02
  • 专利详细信息:   US2011281035-A1 17 Nov 2011 B05D-003/02 201178 Pages: 24 English
  • 申请详细信息:   US2011281035-A1 US106498 12 May 2011
  • 优先权号:   US334372P, US106498

▎ 摘　　要

NOVELTY - Preparing a graphene sheet greater than 1 mu m in length involves combining graphitic oxide with a solvent comprising ethanol to form a graphitic oxide solution; mixing a reductant and the graphitic oxide solution to form a mixture, where the concentration of the reductant in the mixture is 5-25 mmolar; depositing the mixture on a substrate to form a sheet; and heating the mixture at 25-90 degrees C for 3-30 minutes. USE - For preparing a graphene sheet greater than 1 mu m in length (claimed) useful in electronic transistors, superconducting switches and electro-chemical supercapacitors. ADVANTAGE - The process uses milder reduction procedures at lower reductant concentrations to overcome the problems identified in the prior art; and produces pure and flat graphene sheet with length of greater than 1 mu m.