Synthesis of Laminated Graphite Nano-composites Using Exfoliated Graphite

剥落石墨对油脂有很大的吸附能力。利用这一特性，将各种金属配合物、硅酮化合物、金属烷氧化物等浸渍在脱落的石墨中，并进行预处理，主要是在空气中热处理或在水蒸气中水解，以形成前驱体。通过在惰性气氛中加热这些前驱体，合成了以下多功能碳质材料。(1) Ni/石墨复合材料、Fe/石墨复合材料、Fe_3O_4/石墨复合材料(潜在应用：(2)石墨包覆超薄Si-C-O复合材料（抗氧化碳材料、高温导电材料）(3)Mn2O3或MnO2/石墨复合材料（超级电容器电极材料）(4)单组分或多组分金属碳化物纳米颗粒，如β-SiC、TiC、ZrC、（Ti、Zr）C等。所开发的合成(4)的方法简单、成本低，具有工业应用前景。

Exfoliated graphite has very large sorption capacity for oils. Utilizing this property, various metal complexes, silicone compounds, metal alkoxides and others were impregnated into exfoliated graphite, and pretreated, mainly by heat treatment in air or hydrolysis in water vapor, to form precursors. By heating these precursors in an inert atmosphere, the following multi-functional carbonaceous materials were synthesized.(1) Ni/graphite composite, Fe/graphite composite, Fe_3O_4/graphite composite (potential applications : magnetic materials, absorber for electromagnetic radiation, catalyst, and so on)(2) Graphite coated with ultra thin Si-C-O composites (oxidation resistant carbon material, conductive materials at high temperatures)(3) Mn2O3 or MnO2/graphite composite (electrode materials for super capacitors)(4) Nano-particles of single or multi-component metal carbides, such as β-SiC, TiC, ZrC, (Ti,Zr)C and others.The developed method to synthesize (4) is promising as an industrial process because it is simple and low cost.