• 专利标题:   Preparing graphene sheet, useful in e.g. electrical device, comprises forming film comprising graphitizing catalyst, heat-treating gaseous carbon source in presence of the catalyst to form graphene, and cooling graphene to form sheet.
  • 专利号:   US2009110627-A1, EP2055673-A1, CN101423209-A, KR2009043418-A, JP2009107921-A, KR2009103985-A, KR923304-B1, US7988941-B2, KR1310880-B1, EP2055673-B1
  • 发明人:   CHOI J, SHIN H, YOON S, CHOI J Y, SHIN H J, YOON S M, IN Z
  • 专利权人:   SAMSUNG ELECTRONICS CO LTD, SAMSUNG ELECTRONICS CO LTD, SAMSUNG ELECTRONICS CO LTD, SAMSUNG ELECTRONICS CO LTD
  • 国际专利分类:   B32B009/00, C01B031/04, H01B001/04, B01J021/18, B32B037/06, C01B031/02, H01L029/06, B01J023/755, B01J037/02, C01B003/00, C01B003/56, B82Y030/00, B82Y040/00, C01B032/186, C01B032/194, C23C016/01, C23C016/02, C23C016/26, C23C016/56
  • 专利详细信息:   US2009110627-A1 30 Apr 2009 C01B-031/04 200932 Pages: 12 English
  • 申请详细信息:   US2009110627-A1 US169114 08 Jul 2008
  • 优先权号:   KR108860, KR023457

▎ 摘  要

NOVELTY - Preparation of a graphene sheet (140) comprises: forming a film comprising a graphitizing catalyst (100); heat-treating a gaseous carbon source (120) in the presence of the graphitizing catalyst to form graphene (130); and cooling the graphene to form the graphene sheet. USE - The graphene sheet is useful in a graphene substrate (claimed), a membrane, a hydrogen storage medium, an optical fiber and an electrical device. ADVANTAGE - The economical method prepares large-sized graphene sheet, which has a desired thickness. The prepared graphene sheet can be applied to various fields in various applications without limitation on the shape of a substrate even if the graphene sheet has a complicated or topographically modulated structure. The heat-treatment and cooling method is performed as a single cycle but a dense graphene sheet having many layers may be formed by repeating the method several times. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) the graphene sheet prepared by the method or derived from a polycyclic aromatic molecule in which many carbon atoms are covalently bound to each other, where the graphene sheet comprises 1-300 layers and each of the width and length of the graphene sheet is 1 mm or greater; and (2) a graphene substrate comprising: a substrate; and the graphene sheet formed on the substrate, where the graphene sheet is derived from the polycyclic aromatic molecule. DESCRIPTION OF DRAWING(S) - The diagram shows a schematic illustration of the method of preparing the graphene sheet. Graphitizing catalyst (100) Gaseous carbon source (120) Graphene (130) Graphene sheet. (140)