MOFs derivative Co-Ni-B-P composite material and preparation method and application thereof

The invention discloses an MOFs derivative Co-Ni-B-P composite material which is prepared by the following steps of: firstly, preparing Co-Ni-MOF by adopting a solvothermal method to form a flower cluster spherical primary structure; and carrying out boronizing treatment and phosphating treatment by adopting a chemical oxidation-reduction method to respectively form a nanosheet secondary structure and a nanoparticle tertiary structure. The effects of high porosity, material structure protection, material oxygen vacancy increase, specific surface area increase and ion transmission rate increase are achieved, and the effects of rapid Faraday reaction and conductivity improvement and pseudocapacitance providing are further achieved. The preparation method of the Co-Ni-MOF material comprises the following steps of: (1) preparation of a Co-Ni-MOF material; (2) boronizing treatment; and (3) phosphating treatment. The Co-Ni-MOF material is charged and discharged in the range of-0.1 V to 0.45 V when applied as a supe