Bismuth fluoride/ferric fluoride composite positive electrode material with gradient cladding layer of lithium battery and preparation method of composite positive electrode material
A bismuth fluoride-coated iron fluoride dual-composite positive electrode material technology is applied to battery electrodes, circuits, electrical components, etc., which can solve problems such as lattice mismatch, detachment and failure of coating materials, and achieve improved shedding and improved Electron conductivity and the effect of improving comprehensive electrochemical performance
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Embodiment 1
[0015] Embodiment 1: the volume ratio of bismuth nitrate pentahydrate, bismuth nitrate pentahydrate quality 0.5% is the mixed liquid of polyquaternium-22 and polyquaternium-39 of 1:1, the quality of bismuth nitrate pentahydrate 0.5% Glycerol and ethylene glycol are mixed with a mixed liquid with a volume ratio of 1:1 and then put into a ball mill. The mass ratio of the ball mill to the material is 20:1. Ball milling is performed at a speed of 200 rpm for 3 hours. After the ball milling is completed, the material is taken out. And claim this material as material I; The volume ratio of iron nitrate nonahydrate, iron nitrate nonahydrate quality 0.7% is the mixed liquid of polyquaternium-7 and polyquaternium-10 of 1: 1, ferric nitrate nonahydrate Glycerol and ethylene glycol with a mass ratio of 0.7% are mixed with a mixed liquid with a volume ratio of 1:1 and then put into a ball mill. The mass ratio of the ball mill to the material is 20:1, and the ball mill is completed at a spe...
Embodiment 2
[0016] Embodiment 2: the volume ratio of bismuth nitrate pentahydrate, bismuth nitrate pentahydrate quality 2% is the mixed liquid of polyquaternium-22 and polyquaternium-39 of 1:1, the quality of bismuth nitrate pentahydrate 2% Glycerol and ethylene glycol are mixed with a mixed liquid with a volume ratio of 1:1 and put into a ball mill. The mass ratio of the ball mill to the material is 20:1. Ball milling at a speed of 300 rpm for 4 hours. After the ball milling is completed, the material is taken out. And claim this material as material I; The volume ratio of iron nitrate nonahydrate, ferric nitrate nonahydrate quality 3% is the mixed liquid of polyquaternium-7 and polyquaternium-10 of 1: 1, ferric nitrate nonahydrate Mix 3% glycerol and ethylene glycol with a mixed liquid with a volume ratio of 1:1 and put it into a ball mill. The mass ratio of the ball mill to the material is 20:1. Ball mill for 4 hours at a speed of 300 rpm, and the ball mill is completed. After taking o...
Embodiment 3
[0017] Embodiment 3: the volume ratio of bismuth nitrate pentahydrate, bismuth nitrate pentahydrate quality 5% is the mixed liquid of polyquaternium-22 and polyquaternium-39 of 1:1, the quality of bismuth nitrate pentahydrate 5% Glycerol and ethylene glycol are mixed with a mixed liquid with a volume ratio of 1:1 and put into a ball mill. The mass ratio of the ball mill to the material is 20:1. Ball milling at a speed of 400 rpm for 6 hours. After the ball milling is completed, the material is taken out. And claim this material as material I; The volume ratio of iron nitrate nonahydrate, ferric nitrate nonahydrate quality 5% is the mixed liquid of polyquaternium-7 and polyquaternium-10 of 1: 1, ferric nitrate nonahydrate Glycerol and ethylene glycol with a volume ratio of 5% of glycerol and ethylene glycol are mixed and put into a ball mill after being mixed with a mixed liquid with a volume ratio of 1:1. The mass ratio of the ball mill to the material is 20:1, and the ball mil...
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