Preparation method of positive electrode of lithium battery
A lithium battery and lithium ion battery technology, applied in battery electrodes, secondary batteries, electrode carriers/collectors, etc., can solve the problem of poor lithium ion mobility and electronic conductivity, negative impact on material rate performance, and easy peeling off and other issues, to achieve the effect of stable collection and conduction of electrons, inhibition of reaction rate, and good matching
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Embodiment 1
[0028] Preparation of cathode active materials for lithium batteries
[0029] Using citrate co-precipitation-spray drying-high temperature roasting method, the chemical formula of the positive electrode active material is Li 1.42 mn 0.31 Ni 0.25 Pb 0.02 o 2 , wherein x=0.31-0.35, y=0.25-0.28, z=0.02-0.04.
[0030] Weigh the corresponding raw materials according to the molar ratio of the chemical formula, mix and co-precipitate the solution containing manganese source, nickel source and lead source with the solution containing citrate ions, and control the mixing conditions to obtain the precursor slurry; preferably, add Co-precipitation of the ammonia solution; the controlled mixing conditions are as follows: the stirring speed is 500 rpm, the reaction temperature is from room temperature to 85° C., and the reaction time is ≥ 4 hours. Preferably, the concentration of the solution containing citrate ions is 0.5mol / L; the total concentration of nickel, manganese and lead io...
Embodiment 2
[0044] Preparation of cathode active materials for lithium batteries
[0045] Using citrate co-precipitation-spray drying-high temperature roasting method, the chemical formula of the positive electrode active material is Li 1.33 mn 0.35 Ni 0.28 Pb 0.04 o 2 .
[0046] Weigh the corresponding raw materials according to the molar ratio of the chemical formula, mix and co-precipitate the solution containing manganese source, nickel source and lead source with the solution containing citrate ions, and control the mixing conditions to obtain the precursor slurry; preferably, add Ammonia solution is used for co-precipitation; the controlled mixing conditions are as follows: the stirring speed is 1000 rpm, the reaction temperature is from room temperature to 85° C., and the reaction time is ≥ 4 hours. Preferably, the concentration of the solution containing citrate ions is 1.5mol / L; the total concentration of nickel, manganese and lead ions in the solution of nickel source, mang...
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