• 专利标题:   Graphene dispersion used for forming graphene resin powder for battery, comprises graphene and polymer dispersed in solvent, and has preset viscosity measured using B-type viscometer at preset rotating speed.
  • 专利号:   WO2022045286-A1, JP2022545726-X, KR2023044266-A, CN115989282-A
  • 发明人:   KUME A
  • 专利权人:   KYOCERA CORP
  • 国际专利分类:   C08K003/04, C08L101/00, C08L101/06, C09D201/00, C09D007/61, C08L101/12
  • 专利详细信息:   WO2022045286-A1 03 Mar 2022 202228 Pages: 33 Japanese
  • 申请详细信息:   WO2022045286-A1 WOJP031480 27 Aug 2021
  • 优先权号:   JP144599, CN80051560, KR706635

▎ 摘  要

NOVELTY - A graphene dispersion comprises graphene and polymer having a weight average molecular weight of 10000-800000 dispersed in a solvent. The graphene dispersion has a viscosity (V1) of 500-10000 mPa.second as measured at 25 degrees C and a rotation speed of 50 rpm using a B-type viscometer. The ratio of viscosity (V2) of the graphene dispersion measured at 25 degrees C and 5 rpm to the viscosity (V1), is 1.2-5.0. USE - Graphene dispersion used for forming graphene resin powder for electrode of batteries (all claimed) such as lithium ion secondary battery, electrical double layer capacitor and lithium ion capacitor. ADVANTAGE - The graphene dispersion produces secondary batteries having excellent discharge capacity retention.