• 专利标题:   Conductive graphene ink used e.g. in energy storage device, comprises binder solution of binder and first solvent, reduced graphene oxide dispersion of e.g. reduced graphene oxide, third solvent, conductive additive, surfactant and defoamer.
  • 专利号:   US2018305570-A1, WO2018195170-A1, TW201843259-A
  • 发明人:   ELKADY M F, MOHAMED N, KAVANAUGH J, KANER R B
  • 专利权人:   NANOTECH ENERGY INC, UNIV CALIFORNIA, UNIV CALIFORNIA
  • 国际专利分类:   C09D011/08, C09D011/102, C09D011/106, C09D011/38, C09D011/52, H05K001/09
  • 专利详细信息:   US2018305570-A1 25 Oct 2018 C09D-011/52 201876 Pages: 125 English
  • 申请详细信息:   US2018305570-A1 US956356 18 Apr 2018
  • 优先权号:   US488350P, US509227P, US593397P, US956356

▎ 摘  要

NOVELTY - Conductive graphene ink comprises: a binder solution comprising a binder and a first solvent; a reduced graphene oxide dispersion comprising reduced graphene oxide, and a second solvent; a third solvent; a conductive additive; a surfactant; and a defoamer. USE - The conductive graphene ink is useful: in energy storage device; and to form patterns and shapes comprising electrodes and wires on a substrate. ADVANTAGE - The conductive graphene ink: has a viscosity of at most 10000 centipoise and surface area of at least 40 m2/g (claimed); provides the durable, flexible and facile graphene films and provides the electrical energy storage device that exhibits high storage capabilities, flexibility, and high cycling capability as compared to conventional energy storage devices; provides high power density and excellent low-temperature performance for inkjet printing, screen printing, printed circuit boards, radio frequency identification device chips, smart fabrics, conductive coatings, gravure printing, flexographic printing, batteries, supercapacitors, capacitors, electrodes, electromagnetic interference shielding, printed transistors, memory, sensors, membranes, anti-static coatings and large area heaters; utilizes the water that increases the surface tension of the ink and the surfactant reduces the surface tension of the ink; is safely and easily applied to a substrate in applications e.g. prototyping, educational demonstrations, and learning activities; and utilizes the silver nanoparticles that exhibit high thermal and electrical conductivity, thus allowing to form durable electronic components. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for forming the conductive graphene ink comprising forming a binder solution comprising heating the first solvent, adding the binder to the first solvent, mixing the binder and the first solvent and cooling the binder and the first solvent, forming a reduced graphene oxide dispersion comprising the second solvent and reduced graphene oxide, forming a graphene solution comprising the binder solution, the reduced graphene oxide dispersion, the third solvent, the conductive additive, the surfactant, and the defoamer, and mixing the graphene solution to form the conductive graphene ink.