Molybdenum disulfide nanosheet/nanocellulose/carbon nanotube/graphene composite lithium battery thin film negative electrode material and preparation method therefor

The invention relates to a molybdenum disulfide nanosheet/nanocellulose/carbon nanotube/graphene composite lithium battery thin film negative electrode material and a preparation method therefor. The negative electrode material takes nanocellulose as the flexible substrate; the molybdenum disulfide nanosheet, the graphene nanosheet and the carbon nanotube are uniformly mixed and embedded in a network of the nanocellulose to form a flexible self-supporting thin film electrode material with a compact network structure, wherein the composition and the percentage of the thin film negative electrode material are as follows: 60-80wt% of molybdenum disulfide nanosheet, 10-30wt% of nanocellulose, 5-20wt% of carbon nanotube and 5-20% of graphene. By adoption of the method, the renewable energy resource-cellulose can be utilized reasonably and effectively, so that a metal aluminum foil or a copper foil is not required to be used as a current collector; a fluorine-containing polymer is not required to be used as a binder; therefore, influences and hazards to the ecological environment can be greatly avoided; the electrode obtained by the method can be directly filter-pressed, assembled and molded without a tabletting process, so that the preparation method is high in efficiency; and in addition, the thin film negative electrode material is high in mechanical flexibility and continuous bending stability.