Preparation method of nanometer flower-shaped LiVO2/NC lithium ion battery negative electrode material

• Main Authors: NI SHIBING, ZHANG DONGMEI, BAI XIAOMENG
• Format: Patent
• Language: Chinese; English
• Published: 09.08.2024
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; COMPOUNDS THEREOF; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention relates to a preparation method of a nanometer flower-shaped LiVO2/NC lithium ion battery negative electrode material. The nano flower-shaped LiVO2/NC composite material is successfully prepared by adopting free radical polymerization and a hydrothermal method synthesis process. The preparation method comprises the following specific operation steps: 1, taking acrylonitrile as a monomer, taking azodiisobutyronitrile as an initiator, dissolving the acrylonitrile and the azodiisobutyronitrile in an acetone solvent, stirring to form a uniform transparent solution, then carrying out nitrogen purging and heating polymerization, and then carrying out vacuum drying to obtain polyacrylonitrile flower-shaped nanoparticles; and 2, dissolving Li2CO3, V2O5 and C6H12N4 in a proper amount of deionized water, adding the prepared polyacrylonitrile flower-like nanoparticles, uniformly stirring and mixing, and carrying out hydrothermal treatment. And 3, collecting precursor powder subjected to hydrothermal treatm