Preparation method of graphene composite porous ceramic: Fid-Bau Portal

Preparation method of graphene composite porous ceramic

GE ZHEN / CHEN XI / LAI HAORAN / LI JIYANG

The invention discloses a preparation method of graphene composite porous ceramic, which comprises the following steps: adding graphene oxide into distilled water or an organic solvent system to prepare a uniform graphene oxide dispersion liquid, adding ceramic powder, stirring to form a uniform dispersion liquid system, pouring the obtained dispersion liquid into a high-temperature reaction kettle, and stirring to obtain the graphene composite porous ceramic. A self-supported three-dimensional graphene-ceramic composite material is formed through solvothermal reaction, and then the three-dimensional graphene composite porous ceramic material is obtained through drying and high-temperature sintering. The invention provides a novel powder forming method, and the prepared composite foam material is composed of a porous ceramic skeleton and a three-dimensional cross-linked graphene network and has the advantages of being high in universality, adjustable in porosity, capable of improving the conductivity of a ceramic substrate and the like.

本申请公开了一种石墨烯复合多孔陶瓷的制备方法，步骤包括：在蒸馏水或有机溶剂体系内加入氧化石墨烯，配制成均匀的氧化石墨烯分散液，再加入陶瓷粉末，搅拌形成均匀的分散液体系，将所得的分散液倒入高温反应釜，通过溶剂热反应形成自支撑的三维石墨烯‑陶瓷复合材料，再经过烘干和高温烧结，得到三维石墨烯复合多孔陶瓷材料。本发明提出了一种新型的粉末成型方法，制备的复合泡沫材料由多孔陶瓷骨架和三维交联的石墨烯网络组成，具有普适性强，孔隙率可调，提高陶瓷基底导电性能等优点。

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