▎ 摘　　要

NOVELTY - Preparation of multi-element doped fluorophosphate positive electrode material involves (S1) mixing ammonium hydrogen phosphate, mixture of vanadium pentoxide and ammonium metavanadate, graphene and glucose, adding deionized water, and grinding in horizontal sand mill to obtain slurry, (S2) spray-drying slurry by airflow spray dryer, and sintering at constant temperature, and airflow the obtained sintered product, pulverize to obtain pulverized materials, (S3) mixing pulverized material, lithium fluoride, trimanganese tetroxide, lithium carbonate, carbon nanotube and non-niobium oxide, adding deionized water, and sand milling to obtain mixed material, and spray-drying to obtain dry powder, (S4) mixing dried powder with nano-alumina at high speed in high-speed mixer to obtain powder wrapped with nano-alumina, and raising the temperature, sintering, and crushing, sieving and removing electromagnetically. USE - Preparation of multi-element doped fluorophosphate positive electrode material (claimed). ADVANTAGE - The multi-element doped fluorophosphate positive electrode material has excellent electrical conductivity, excellent processability, high point position, high energy density, and excellent cycle and rate performance. The method is simple and suitable for large-scale industrial production. DETAILED DESCRIPTION - Preparation of multi-element doped fluorophosphate positive electrode material involves (S1) mixing ammonium hydrogen phosphate, mixture of vanadium pentoxide and ammonium metavanadate, graphene and glucose, adding deionized water, and grinding in horizontal sand mill for 3-6 hours to obtain slurry, (S2) spray-drying the slurry by airflow spray dryer, raising the temperature of obtained dry particles to 720-780°C under protection of nitrogen atmosphere, and sintering at constant temperature for 6-9 hours, and airflow the obtained sintered product pulverize, to obtain pulverized materials, (S3) mixing pulverized material, lithium fluoride, trimanganese tetraoxide, lithium carbonate, carbon nanotube and non-niobium oxide, adding deionized water, and sand milling for 3-6 hours to obtain mixed material, and spray-drying to obtain dry powder, (S4) mixing dried powder with nano-alumina at high speed in high-speed mixer to obtain powder wrapped with nano-alumina, and raising the temperature of obtained powder wrapped with nano-alumina to 700-800°C in inert atmosphere, sintering at constant temperature for 5-8 hours, and crushing the obtained sintered product by airflow, sieving and removing electromagnetically. An INDEPENDENT CLAIM is included for multi-element doped fluorophosphate positive electrode material.