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  • 专利标题:   Preparation of graphene/silver composite material involves mixing reducing agent solution and graphene oxide, adding silver nitrate solution, freeze-drying, reducing graphene oxide/silver composite powder, molding and sintering.
  • 专利号:   CN104700961-A, WO2016145985-A1, CN104700961-B, EP3273448-A1, US2018073105-A1, EP3273448-A4, JP2018513919-W, JP6490253-B2
  • 发明人:   CHEN L, LIU W, MAO L, WANG P, SHEN M
  • 专利权人:   SHANGHAI HIWAVE NEW MATERIAL TECHNOLOGY, SHANGHAI HIWAVE COMPOSITE MATERIALS CO, SHANGHAI HEWU COMPOSITE MATERIALS CO LTD, SHANGHAI HIWAVE COMPOSITE MATERIALS CO, SHANGHAI HIWAVE COMPOSITE MATERIALS CO
  • 国际专利分类:   H01B001/02, H01B001/04, H01B013/00, B21B001/16, B21C023/22, B22F003/14, B22F003/16, B22F009/24, C22C001/04, C22C005/06, B22F001/00, B22F003/18, B22F003/20, C22C001/05, C22C001/10, H01B005/02, H01H001/023
  • 专利详细信息:   CN104700961-A 10 Jun 2015 H01B-013/00 201570 Pages: 10 Chinese
  • 申请详细信息:   CN104700961-A CN10117683 18 Mar 2015
  • 优先权号:   CN10117683, WOCN074798

▎ 摘　　要

NOVELTY - A reducing agent solution is mixed with graphene oxide, silver nitrate solution is added, and reduced to obtain silver powder and nanosilver. Graphene oxide adsorbs silver to obtain graphene oxide-silver suspension. The suspension is centrifuged, washed and freeze-dried to obtain graphene oxide/silver composite powder. The graphene oxide/silver composite powder is subjected to reduction treatment under hydrogen atmosphere to obtain graphene/silver composite powder. The graphene/silver composite powder is molded and sintered to obtain graphene/silver composite material. USE - Preparation of graphene/silver composite material (claimed). ADVANTAGE - The method provides graphene/silver composite material having tensile strength of 185-195 MPa, elongation of 40-45%, excellent dispersibility and physical property, by simple and controllable process. DETAILED DESCRIPTION - Silver nitrate solution and reducing agent solution are prepared. The reducing agent solution is mixed with graphene oxide, silver nitrate solution is added, stirred and reduced to obtain silver powder and nanosilver. Graphene oxide adsorbs silver to obtain graphene oxide-silver suspension. The suspension is centrifuged, washed and freeze-dried to obtain graphene oxide/silver composite powder. The graphene oxide/silver composite powder is subjected to reduction treatment under hydrogen atmosphere to obtain graphene/silver composite powder. The graphene/silver composite powder is molded and sintered to obtain graphene/silver composite material.