• 专利标题:   Copper foil used for manufacturing graphene for e.g. separator for fuel cells, mercury-free fluorescent lamp and composite material, comprises sulfur, oxygen, copper and oxygen gas, when copper foil is heated at specified conditions.
  • 专利号:   JP2014227594-A
  • 发明人:   CHIBA Y
  • 专利权人:   JX NIPPON MINING METALS CORP
  • 国际专利分类:   C01B031/02, C22C009/00, C22C009/02, C22F001/00, C22F001/08
  • 专利详细信息:   JP2014227594-A 08 Dec 2014 C22C-009/00 201505 Pages: 11 Japanese
  • 申请详细信息:   JP2014227594-A JP110790 27 May 2013
  • 优先权号:   JP110790

▎ 摘  要

NOVELTY - A copper foil (10) comprises 5x 10-9 weight ppm or less sulfur, 5.5x 10-9 weight ppm or less oxygen, 8.5x 10-11 weight ppm or less copper, and 1x 10-8 weight ppm or less oxygen gas, when copper foil is heated from room temperature to 950 degrees C under vacuum of 5x 10-5 or less, and maintained under vacuum. USE - Copper foil is used for manufacturing graphene (claimed). Uses include but are not limited to separator for fuel cells, transparent electrode, conductive thin film of display element, mercury-free fluorescent lamp, composite material, and carrier of drug delivery system. ADVANTAGE - The copper foil enables stable manufacture of graphene. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of graphene (20), which involves supplying hydrogen gas and carbon-containing gas to heated copper foil arranged in interior of predetermined chamber (100), forming graphene on surface of the copper foil, and etching away the copper foil while laminating a transfer sheet (30) on the surface of the graphene and transferring the graphene on the transfer sheet. DESCRIPTION OF DRAWING(S) - The drawing shows a process drawing explaining the manufacture of graphene. Copper foil (10) Graphene (20) Transfer sheet (30) Predetermined chamber (100) Etching tank (110)