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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 flowdirected assembly of this graphene oxide was produced in a celluloseacetatebased microfilter to form an ordered nanostructured membrane. The membrane was treated by chemical reduction and carbonization for deoxidation and regraphitization, which increased its electrical conductivity while retaining its shape. The graphenebased 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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Key words:
- Graphene /
- Graphite oxide /
- Conductivity /
- Membrane
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