Carbon/tin oxide/graphene composite material and preparation method and application thereof

The invention relates to a carbon/tin oxide/graphene composite material and a preparation method and application thereof. A preparation method of carbon/tin oxide/graphene composite material comprisesthe following steps of: hydrothermally reacting rice husk in alkaline solution at 160 DEG C to 180 DEG C to obtain a first precipitate; Carrying out acid washing on the first precipitate, and then washing the first precipitate with water to neutrality to obtain a carbon skeleton; hydrothermally reacting the carbon skeleton with tin source and graphene to obtain a second precipitate at 180 DEG C to 200 DEG C; calcining the second precipitate at 500 to 550 degree centigrade in a protective gas atmosphere to obtain carbon/tin oxide/graphene composite. The carbon/tin oxide/graphene composite prepared by the preparation method of the carbon/tin oxide/graphene composite material has the advantages of low cost and good electrochemical performance. 本发明涉及种碳/氧化锡/石墨烯复合材料及其制备方法和应用。种碳/氧化锡/石墨烯复合材料的制备方法包括制备步骤：在160℃～180℃的条件下，将稻壳