Preparation method of covalent bond coupled MXene-antimonene heterostructure as well as product and application of covalent bond coupled MXene-antimonene heterostructure

The invention discloses a preparation method of a covalent bond coupled MXene-antimonene heterostructure, and the preparation method comprises the following steps: S1, carrying out surface modification treatment on an MXene material through a cationic surfactant solution, and then adding an antimonene solution for two-phase self-assembly; and S2, carrying out freeze drying on the solution after the self-assembly is completed, and carrying out annealing treatment to obtain the covalent bond coupled MXene (antimonene heterostructure composite material. The invention also discloses the covalent bond coupled MXene-antimonene heterostructure obtained by the preparation method and application of the covalent bond coupled MXene-antimonene heterostructure on a negative electrode of a lithium ion battery. The synthesized covalent bond coupled MXene (at) antimonene heterostructure has the advantages that the structural stability is enhanced, volume expansion is effectively relieved, charge transfer kinetics is improved