• 专利标题:   Preparing graphene composite conductive slurry by using microwave-ultrasound comprises e.g. sequentially acidifying graphite and intercalating, washing, drying and performing microwave expansion treatment on expandable graphite.
  • 专利号:   CN111484271-A, CN111484271-B
  • 发明人:   NIU Q, MA J, LI R, MIAO L
  • 专利权人:   SHANDONG HAIKE INNOVATION RES INST CO
  • 国际专利分类:   C01B032/225, C04B111/94, C04B026/08, H01M010/0525, H01M004/62
  • 专利详细信息:   CN111484271-A 04 Aug 2020 C04B-026/08 202068 Pages: 11 Chinese
  • 申请详细信息:   CN111484271-A CN10594405 28 Jun 2020
  • 优先权号:   CN10594405

▎ 摘  要

NOVELTY - Preparing graphene composite conductive slurry comprises (1) sequentially acidifying the graphite and intercalating, washing, and drying to obtain expandable graphite, (2) performing a microwave expansion treatment on the expandable graphite) under the protection of an atmosphere to obtain expanded graphite, (3) mixing the expanded graphite with a solvent and a carbon black conductive agent, and subjecting the obtained mixture to a secondary microwave expansion treatment under atmosphere protection to obtain a pre-slurry, where the solvent is N-methylpyrrolidone, dimethylformamide, diethylformamide, dimethylsulfoxide, methanol, ethanol, ethylene glycol and/or tetrahydrofuran and (4) mixing the pre-slurry and glue solution and performing ultrasonic stirring to obtain a graphene composite conductive paste, where the glue liquid is a mixed liquid of polyvinylidene fluoride, polytetrafluoroethylene, carboxymethyl cellulose or styrene butadiene rubber and a solvent. USE - The method is useful for preparing graphene composite conductive slurry. ADVANTAGE - The graphene composite conductive paste has a complete sheet structure, good stability, and good electrical conductivity. DETAILED DESCRIPTION - AN INDEPENDENT CLAIM is also included for graphene composite conductive paste.