• 专利标题:   Composite used to form conductive composite foam comprises ceramic matrix and self-assembled, continuous, well-ordered graphene scaffold incorporated into the ceramic matrix.
  • 专利号:   US2022194858-A1
  • 发明人:   KRAFT G, ADAMSON D H
  • 专利权人:   UNIV CONNECTICUT
  • 国际专利分类:   C01B032/19, C04B035/14, C04B041/50
  • 专利详细信息:   US2022194858-A1 23 Jun 2022 C04B-035/14 202260 English
  • 申请详细信息:   US2022194858-A1 US552178 15 Dec 2021
  • 优先权号:   US127013P, US552178

▎ 摘  要

NOVELTY - Composite comprises: (a) a ceramic matrix; and (b) a self-assembled, continuous, well-ordered graphene scaffold incorporated into the ceramic matrix. USE - The composite is useful for forming conductive composite foam (claimed). ADVANTAGE - The composite: utilizes self-assembled, continuous, well-ordered graphene (not graphene oxide) scaffold is incorporated into a ceramic matrix and the graphene is exfoliated and assembled spontaneously using a thermodynamically driven approach; utilizes phase inversion to synthesize a silica high internal phase emulsion (HIPE); utilizes hydrophilic polymer to both change surface energy of graphene sheets and catalyze condensation of ceramic precursor at room temperature and neutral pH; provides material that possible and by scalable and environmentally friendly mechanism; and free of oxidation or reduction of the graphite required and no high temperature treatment is necessary, making this new material, and its mechanism of formation, unique and highly advantageous. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for forming a conductive composite foam, comprising combining graphite, tetraethylorthosilicate (TEOS), and an aqueous solution of poly(ethylene imine) (PEI) to create an emulsion that is stabilized by graphene sheets formed at an interface between the TEOS and the PEI, and allowing the emulsion to solidify to define an open-cell foam, where the emulsion exhibits conductivity based on the open-cell foam with cells lined by a thin layer of overlapping graphene sheets.