• 专利标题:   Membrane used in water filtration and purification and to form conductive surfaces in batteries, comprises porous polymer substrate and first layer of graphene platelets having aminated graphene platelets supported by substrate.
  • 专利号:   US2021046430-A1, CA3089361-A1, US11058997-B2
  • 发明人:   FLINT I, OGUNTUASE N
  • 专利权人:   2599218 ONTARIO INC, 2599218 ONTARIO INC, 2599218 ONTARIO INC
  • 国际专利分类:   B01D067/00, B01D069/10, B01D069/12, B01D071/02, B32B005/30, B32B009/04
  • 专利详细信息:   US2021046430-A1 18 Feb 2021 B01D-071/02 202122 English
  • 申请详细信息:   US2021046430-A1 US542456 16 Aug 2019
  • 优先权号:   US542456

▎ 摘  要

NOVELTY - Membrane (100) comprises: a porous polymer substrate (102); and at least a first layer of graphene platelets supported by the substrate, where the graphene platelets of the first layer comprise aminated graphene platelets. USE - The membrane is useful in water filtration and purification and for forming conductive surfaces (e.g. for use in batteries), optionally with intercalated ions on or within those surfaces. ADVANTAGE - The membrane is water permeable, ion impermeable, and conductive of heat and electricity. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (a) making (M1) a membrane, comprising (a) providing a porous polymer substrate, (b) providing a first suspension of graphene platelets in a fluid, where the graphene platelets of the first suspension are aminated graphene platelets and (c) applying the first suspension to the substrate to deposit a layer of the aminated graphene platelets on the substrate; and (b) making (M2) a substrate for a graphene membrane, comprising (a1) providing a sheet of a porous polymer, (b1) treating the sheet of porous polymer with an acid to impart a negative charge to the sheet of porous polymer and (c1) treating the charged surface with at least one metal ion. DESCRIPTION OF DRAWING(S) - The figure shows schematic view of membrane. Membrane (100) Substrate (102) Pores (106) Second layer (110)