• 专利标题:   Preparation of in-situ growing carbon nanotube/graphene composite sponge by preparing oriented graphene sponge by chemical or thermal reduction, vacuum dipping in nickel(II) nitrate ethanol solution, drying and chemical vapor depositing.
  • 专利号:   CN113044830-A
  • 发明人:   PENG Q, CHEN Z, HE X, ZHAO X
  • 专利权人:   SHENZHEN XICHUANG ADVANCED MATERIAL INST
  • 国际专利分类:   C01B032/16, C01B032/184, C01B032/194
  • 专利详细信息:   CN113044830-A 29 Jun 2021 C01B-032/16 202171 Pages: 8 Chinese
  • 申请详细信息:   CN113044830-A CN10333394 29 Mar 2021
  • 优先权号:   CN10333394

▎ 摘  要

NOVELTY - An in-situ growing carbon nanotube/graphene composite sponge is prepared by directionally freezing dispersed graphene oxide aqueous solution at low temperature, using freeze-drying method to obtain oriented graphene oxide sponge, preparing oriented graphene sponge by chemical reduction or thermal reduction, vacuum dipping in nickel(II) nitrate ethanol solution, drying by oven to obtain framework loaded nickel nitrate three-dimensional graphene sponge, putting into quartz tube, taking nitrogen as protective gas, hydrogen as reducing gas and ethylene as carbon source, performing chemical vapor deposition in tubular furnace, and in-situ growing carbon nanotube on inner wall of graphene framework. USE - The method is used for preparing in-situ growing carbon nanotube/graphene composite sponge. ADVANTAGE - The method can adjust appearance of carbon nanotube by adjusting nickel nitrate concentration and vapor deposition time in chemical vapor deposition, adjusts composite sponge inner structure, and meets different use requirements. The product improves conductivity and mechanical performance by in situ growing carbon nanotube.