This paper focuses on the preparation of hollow mixed metal oxide materials by means of mixed metalatom doping. In this paper, the hollow core-shell structure Zn-Co-MOFs material was prepared byhydrothermal method, calcined into Zn-Co-C material, and its conductivity and electrochemicalperformance were improved on the basis of retaining hollow core-shell channel structure. Hollow coreshell structure to avoid direct contact with the electrode materials and electrolyte, reduce theelectrolyte decomposition, a loop to form porous channel structure, shorten the lithium ion diffusionpath and improve the lithium storage capacity, core-shell structure ACTS as a skeleton structure,effectively relieve internal stress changes, the structure of the electrode material volume change anddestruction, reduce capacity attenuation. The Zn-Co-C composite has a discharge specific capacity of1749mAh g-1in the first coil and a maximum coulomb efficiency of 99.8%. At 200 mA g-1currentdensity, the reversible capacity is up to 704mAh g-1at 200 cycles, and the multiplier and impedanceare also excellent.
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