• 专利标题:   Preparing graphene conductive paste involves mixing microbubble water, alcohol and raw materials having graphite sheet structure, followed by subjecting to high-speed mechanical shearing and/or ultrasonic liquid phase stripping.
  • 专利号:   CN110589815-A
  • 发明人:   YANG S
  • 专利权人:   UNIV BEIHANG
  • 国际专利分类:   C01B032/19, C01B032/194, H01B001/04, H01B013/00, H01M004/62
  • 专利详细信息:   CN110589815-A 20 Dec 2019 C01B-032/19 202006 Pages: 26 Chinese
  • 申请详细信息:   CN110589815-A CN10856890 11 Sep 2019
  • 优先权号:   CN10856890

▎ 摘  要

NOVELTY - Preparing a graphene conductive paste involves: mixing microbubble water (A), an alcohol and raw materials having a graphite sheet structure to obtain a suspension (A); subjecting the suspension (A) to a high-speed mechanical shearing and/or ultrasonic liquid phase stripping to strip the graphite sheet layer structure in the raw material to obtain graphene to obtain a graphene-containing suspension (B); vacuum suction filtering and washing the suspension (B) to remove the alcohols to obtain a filter material containing the graphene; and adding the filter material to microbubble water (B) to perform stirring/ultrasonically mixing to obtain an aqueous graphene conductive paste in which the graphene is uniformly dispersed. The microbubble water is an aqueous solution containing microbubbles having particle size of less than 100 mu m. The concentration of the microbubbles in the water is greater than 106/ml. The microbubble water (A) and (B) are the same or different. USE - The method is useful for preparing a graphene conductive paste. ADVANTAGE - The method is capable of simply and feasibly preparing the graphene conductive paste. The obtained graphene can be uniformly and stably dispersed in the conductive paste, so that the effect of not using or very little use of dispersant or additive is achieved.