• 专利标题:   Fabricating porous graphene foam for e.g., electrode, by additively manufacturing printed structure from ceramic slurry, partially debinding, partially sintering, depositing graphene on formed porous ceramic scaffold, and etching scaffold.
  • 专利号:   WO2021118459-A1
  • 发明人:   DING J, XU X, GUAN C
  • 专利权人:   UNIV SINGAPORE NAT
  • 国际专利分类:   B01J020/20, B29C064/165, B33Y010/00, B33Y080/00, B82Y015/00, C01B032/182, C01B032/186, C04B041/91, H01G011/32, H01M004/96
  • 专利详细信息:   WO2021118459-A1 17 Jun 2021 C01B-032/186 202155 Pages: 71 English
  • 申请详细信息:   WO2021118459-A1 WOSG050718 04 Dec 2020
  • 优先权号:   SG10012039

▎ 摘  要

NOVELTY - A porous graphene foam is fabricated by (a) forming a printed structure from a ceramic slurry using an additive manufacturing technique; (b) partially debinding the printed structure to form a calcined structure; (c) partially sintering the calcined structure to form a porous ceramic scaffold; (d) depositing graphene on porous ceramic scaffold using chemical vapor deposition; and (e) partially etching the porous ceramic scaffold to form the graphene foam; where the ceramic slurry comprises a ceramic with a ceramic loading of 60-75 wt.%. USE - Fabrication of porous graphene foam used for electrode, actuator or heat absorbing material (all claimed). ADVANTAGE - The ceramic loading of the ceramic slurry allows for inter-particulate interactions such that during the steps of debinding and sintering, the pore size distribution of the ceramic composite can be controlled, and allows for the properties of graphene composite and graphene foam to be fine tuned. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for porous graphene foam comprising an interconnected bicontinuous network of graphene and air pockets, having a ceramic content of less than or equal to 5 at.%.