The invention discloses a
lithium battery negative
electrode material, and a preparation method of a
lithium battery applying the
lithium battery negative
electrode material. The preparation method comprises the following steps: firstly, activating a carbon-based material, then preparing an MOF@C
composite material from the carbon-based material, a
transition metal ion salt and a polydentate organic ligand by using a hydrothermal method, then proportioning the MOF@C
composite material and a binder into negative
electrode slurry with different binder contents, carrying out multilayer
coating according to a sequence that the concentration of the binder is gradually reduced from the inner layer to the outer layer by adopting a slit type
extrusion coating method so as to prepare a negative electrode piece, and finally assembling the negative electrode piece into the corresponding
lithium battery. According to the prepared MOF@C
composite material, the electrical
conductivity is improved while the advantages of MOF are reserved, and active sites in the charging and discharging process are increased; and the multilayer
coating mode is adopted to compensate for the influence caused by migration of the binder to the surface in the
drying process, the peeling strength of the negative
electrode material on the foil is effectively improved, meanwhile, preparation of a thick electrode is facilitated, and then the negative electrode capacity is improved.