▎ 摘　　要

NOVELTY - A fast charging explosion-proof lithium ion battery comprises shell and electric core comprising positive plate, negative plate and electrolyte. The positive plate is prepared by adding ferric nitrate and phosphoric acid into deionized water, stirring, heating, cooling, adding nitric acid solution, adding sodium metaaluminate, reacting, centrifuging, separating solid and liquid, washing with deionized water, drying, putting in acetic acid solution for 1.5 hours, filtering, washing, and drying; takinggraphene, putting in anhydrous acetone, solicating, adding glucose, stirring, adding iron phosphate, ball milling, drying, vacuum drying, sieving, and calcining; taking graphene by in anhydrous acetone, sonicating, adding glucose, stirring, adding ferric phosphate/graphene, ball milling, drying, vacuum drying, sieving, and calcining; and mixing with graphene and binder, stirring, coating on aluminum foil, vacuum drying, tableting, and cutting. USE - Fast charging explosion-proof lithium ion battery. ADVANTAGE - The lithium ion battery has good charging and discharging performance, good circulating performance, and high safety and is explosion-proof. DETAILED DESCRIPTION - A fast charging explosion-proof lithium ion battery comprises shell and electric core. The electric core comprises a positive plate, negative plate and electrolyte. The positive plate is prepared by: (A) adding 25 pts. wt. ferric nitrate and 30 pts. wt. phosphoric acid into 100 pts. wt. deionized water, stirring, heating for 15 minutes at 80 degrees C, cooling, adding nitric acid solution, adding 50 pts. wt. sodium metaaluminate, reacting for 3.5 hours at 90 degrees C, centrifuging, separating solid and liquid, washing with deionized water for 5 times, drying for 4-8 hours at 100 degrees C, putting dried precipitate in 75% acetic acid solution for 1.5 hours, filtering, using deionized water to wash for 5 times, and drying at 100 degrees C for 4-8 hours, where concentration of nitric acid solution is 1.5 mol/L and concentration of sodium metaaluminate solution is 1 mol/L; (B) taking 1 pt. wt. graphene, putting in 50 pts. wt. anhydrous acetone, sonicating at 1000 W for 1 hour, adding 3 pts. wt. glucose, stirring, adding 10 pts. wt. iron phosphate, ball milling for 2 hours, drying for 2-10 hours at 45 degrees C, vacuum drying for 8 hours at 100 degrees C, sieving with a 300-mesh sieve, and calcining for 3-4 hours at 500-600 degrees C; (C) taking 1 pt. wt. graphene by in 50 pts. wt. anhydrous acetone, sonicating at 1000 W for 1 hour, adding 3 ppts. wt. glucose, stirring, adding 10 pts. wt. ferric phosphate/graphene, ball milling for 2 hours, drying for 2-10 hours at 45 degrees C, vacuum drying for 8 hours at 100 degrees C, passing by 300-mesh sieve, and calcining for 3-4 hours at 500-600 degrees C; and (D) mixing with graphene and binder at weight ratio of 8:1.5:1, stirring, coating on aluminum foil, vacuum drying for 16 hours at 100 degrees C, tableting, and cutting, where binder is linear crystalline polyvinylidene fluoride polymer or PTFE.