纳米石墨片、碳纳米管和过渡金属氧化物复合材料及制法

Composite material of nano graphite flakes, carbon nano tubes and transition metal oxides and preparation method

Abstract

The invention provides composite material of nano graphite flakes, carbon nano tubes and transition metal oxides and preparation method. The composite material comprises the nano graphite flakes, the carbon nano tubes growing on the surfaces of the nano graphite flakes and the transition metal oxides, wherein the thickness of nano graphite flakes is smaller than 50nm; the diameters of the carbon nano tubes is 2-60nm; the transition metal oxides are oxides mixed by one or above two components comprising iron, cobalt and nickel in an arbitrary proportion; the grain sizes of the transition metal oxides is 2-100nm; and the weight ratio of carbon to the metal oxides is 1:(0.1-10). The nano graphite flake/carbon nano tube/transition metal oxide composite material with a novel three-dimensional structure is prepared through growing the carbon nano tubes on the surfaces of the nano graphite flakes and loading the nano particles of the transition metal oxides meanwhile. The composite material has high specific surface area and good electrical conductivity and can be applied to the fields of electrode materials, catalysis, hydrogen storage, energy storage, environmental protection, and the like.
本发明提供的是一种纳米石墨片、碳纳米管和过渡金属氧化物复合材料及制法。由纳米石墨片、生长在纳米石墨片表面的碳纳米管和过渡金属氧化物组成,所述纳米石墨片的厚度小于50nm,所述碳纳米管的直径为2~60nm,所述过渡金属氧化物为铁、钴、镍中的一种或两种以上的任意比例混合的氧化物,过渡金属氧化物的粒径大小为2~100nm,碳与金属氧化物的重量比为1∶0.1~10。本发明通过在纳米石墨片表面生长碳纳米管,同时负载过渡金属氧化物纳米粒子,制备一种具有新型立体三维结构的纳米石墨片/碳纳米管/过渡金属氧化物复合材料,该复合材料不仅比表面积高而且导电性好,可以应用于电极材料、催化、储氢、储能以及环保等领域。

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