• 专利标题:   Preparation of graphene oxide hydrogel for manufacturing e.g. graphene oxide fibers, involves annealing graphene oxide dispersion, or mixing graphene oxide dispersion and acid solution and carrying out sol-gel phase transition reaction.
  • 专利号:   CN105174249-A, CN105174249-B
  • 发明人:   LI C, LIU Q, SHI G, ZHANG M
  • 专利权人:   UNIV TSINGHUA
  • 国际专利分类:   C01B031/04, D01F011/12, D01F009/12, C01B032/184, C01B032/198
  • 专利详细信息:   CN105174249-A 23 Dec 2015 C01B-031/04 201638 Pages: 16 English
  • 申请详细信息:   CN105174249-A CN10447033 27 Jul 2015
  • 优先权号:   CN10447033

▎ 摘  要

NOVELTY - Preparation of graphene oxide hydrogel involves annealing graphene oxide dispersion in a sealed container, or mixing graphene oxide dispersion and acid solution, adjusting pH to 1-4, and carrying out sol-gel phase transition reaction. USE - Preparation of graphene oxide hydrogel used for manufacture of reduced graphene film and graphene oxide fibers (all claimed). ADVANTAGE - The method efficiently and economically provides graphene oxide hydrogel with high productivity, by simple method. The reduced graphene film or graphene oxide fibers manufactured using graphene oxide hydrogel has high mechanical property, electrical conductivity, heat conductivity and toughness. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) manufacture of reduced graphene film using graphene oxide hydrogel; and (2) manufacture of graphene oxide fibers using graphene oxide hydrogel.