• 专利标题:   Preparing high-strength graphene material involves placing the graphene oxide macroscopic material in metal salt solution of immersion treatment, then stretching treatment to obtain graphene oxide hydrogel, where solvent of metal salt is polar solvent.
  • 专利号:   CN115748234-A
  • 发明人:   LI P, WANG Z, CAI G, XU Z
  • 专利权人:   UNIV ZHEJIANG
  • 国际专利分类:   C01B032/184, C01B032/198, D06M101/40, D06M011/00, D06M011/155, D06M011/17, D06M011/28, D06M011/56
  • 专利详细信息:   CN115748234-A 07 Mar 2023 D06M-011/155 202323 Chinese
  • 申请详细信息:   CN115748234-A CN11461157 21 Nov 2022
  • 优先权号:   CN11461157

▎ 摘  要

NOVELTY - Preparing high-strength graphene material involves placing the graphene oxide macroscopic material in a metal salt solution for 1-5 seconds of immersion treatment and then stretching treatment to obtain a graphene oxide hydrogel. The concentration of the metal salt is 0.2-2 mol/L, and the solvent of the metal salt is a polar solvent. The stretching rate is 20-60%, and the stretching is continued for 3-5 seconds to keep the graphene oxide sheets aligned, and obtained the dewrinkled graphene oxide material after drying. USE - Method for preparing high-strength graphene material. ADVANTAGE - The method is based on the coordination cross-linking effect of metal ions and graphene oxide, enhances the interlayer crosslinking of graphene oxide, provides stronger interlayer force, withstand a large tensile load so that the graphene oxide sheets are arranged in a straight line, and endowing the graphene material with excellent properties of high strength and high modulus, and has wide application prospects.