The invention discloses a preparation method of a
lithium ion battery negative
electrode material
spinel porous high-entropy
oxide material, and belongs to the field of
inorganic oxide powder materials. The method is a low-temperature
combustion synthesis method, and specifically includes the steps that
metal nitrate is adopted as a
metal source, one or a mixture of several of
tartaric acid,
citric acid, glucose, hexamine and
ethylenediaminetetraacetic acid is used as a fuel, and by controlling the concentration of the
metal salt
raw material, the kind and the amount of the fuel, the kind andthe amount of a
combustion improver and an ignition mode, characteristics of the grain size, the shape and the like of
spinel ransition metal high-entropy
oxide nano-
powder are adjusted and controlled. According to the preparation method of the
lithium ion battery negative
electrode material
spinel porous high-entropy
oxide material, liquid-phase ingredients are adopted, molecular-level even mixing of the raw materials is ensured, and a stoichiometric ratio of the product is achieved; meanwhile the preparation method of the
lithium ion battery negative
electrode material spinel porous high-entropy oxide material has the advantages of being energy-saving, high in production efficiency,
environmentally friendly, free from complex post-treatment and the like, and the prepared high-entropy oxide
powder is high in purity, small in grain size and even in distribution, and has high initial
discharge capacity and good cycle performance.