| abstract |
The invention provides a composite material composed of one-dimensional rod-shaped Co 3 V 2 O 8 supported by a porous carbon box (Porous Carbon Box, PCB) obtained by pyrolysis of a Co-containing metal-organic framework compound (Metal-Organic Framework, MOF). and its preparation method and its application in the negative electrode material of lithium ion battery. In the present invention, the zeolitic imidazolate framework-67 (Zeolitic Imidazolate Frameworks-67, ZIF-67) with controllable morphology is prepared, which is used as a template precursor to undergo high-temperature pyrolysis and then pickled to remove Co, and the obtained porous carbon box is in After ultrasonic dispersion in the solution, the porous carbon box was then used as the internal framework to self - assemble through a hydrothermal process, and Co3V2O8 was attached to the surface of the porous carbon box and embedded in the pores to form a composite material. The whole experimental process of the invention does not generate toxic and dangerous substances, and the operation is simple and easy. It is an excellent negative electrode material for lithium ion batteries. |