有序石墨烯导电炭薄膜的制备

有序石墨烯导电炭薄膜的制备

  • 摘要: 采用Hummers法合成氧化石墨,在水中超声分散获得氧化石墨烯水溶胶,通过微滤法使氧化石墨烯片定向流动组装,制得氧化石墨烯薄膜。再通过化学还原和热处理使所制氧化石墨烯薄膜脱氧重石墨化,保持其形貌时可控制其导电性,制得电导率为184.8S/cm的石墨烯导电炭膜。

     

    Abstract: Graphite oxide was synthesized by the Hummer method, followed by ultrasonic delamination in water to produce a stable hydrosol of graphene oxide sheets. Then, a flowdirected assembly of this graphene oxide was produced in a celluloseacetatebased microfilter to form an ordered nanostructured membrane. The membrane was treated by chemical reduction and carbonization for deoxidation and regraphitization, which increased its electrical conductivity while retaining its shape. The graphenebased conductive membrane had a conductivity of 184.8S/cm. A reductive treatment before the carbonization increased the mass of residual carbon in the resulting membranes.

     

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