• 专利标题:   Obtaining stable dispersion of graphene, graphite, and amorphous carbon involves preparing alkaline solution by adding sodium hydroxide in water, cooling obtained solution, and adding sodium hydroxide and microcrystalline cellulose.
  • 专利号:   WO2017063062-A1, BR102015026420-A2, EP3363530-A1, US2018304210-A1, EP3363530-A4
  • 发明人:   GALEMBECK F, SILVA FERREIRA E
  • 专利权人:   GALEMBECK F, FERREIRA E, SILVA FERREIRA E, GALEMBECK F, FERREIRA E, FERREIRA E, GALEMBECK F
  • 国际专利分类:   B01F003/12, B82Y030/00, C09D101/02, C09D011/037, C09D011/14, C09D011/17, C09D011/52, C09D005/24, C09D005/32, C09D007/45, C09J101/02, C09J009/02, H01B001/04, H01B013/00, H01M004/62, C01B032/21, C01B032/354
  • 专利详细信息:   WO2017063062-A1 20 Apr 2017 B01F-003/12 201730 Pages: 48
  • 申请详细信息:   WO2017063062-A1 WOBR050169 22 Jul 2016
  • 优先权号:   BR10026420, BR10264208, WOBR050169

▎ 摘  要

NOVELTY - Obtaining stable dispersion of graphene, graphite, and amorphous carbon involves preparing alkaline solution by adding sodium hydroxide in water. The obtained solution is cooled in an ice bath. The sodium hydroxide solution and microcrystalline cellulose are added to solution. The obtained solution is homogenized and dispersed in disperser, where negative temperature of system is maintained for more than 1 hour to obtain solution containing 5% (w/w) cellulose and 7% (w/w) sodium hydroxide. USE - Method for obtaining stable dispersion of graphene, graphite, and amorphous carbon (claimed). ADVANTAGE - The method enables to obtain stable dispersion of graphene, graphite, and amorphous carbon, which does not utilizes surfactant and does not carry out chemical modification of graphene, such as oxidation to produce graphene oxide. DETAILED DESCRIPTION - Obtaining stable dispersion of graphene, graphite, and amorphous carbon involves preparing alkaline solution by adding sodium hydroxide in water. The obtained solution is cooled in an ice bath. The sodium hydroxide solution and microcrystalline cellulose are added to solution. The obtained solution is homogenized and dispersed in disperser, where negative temperature of system is maintained for more than 1 hour to obtain solution containing 5% (w/w) cellulose and 7% (w/w) sodium hydroxide. The alkaline cellulose solution is warmed to ambient temperature, and 2% conventional graphite powder is added and mixture is stirred in a homogenizer.