LiNi0.80Co0.15Al0.05O2 was synthesized by preoxidizing PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC. The results show that the preoxidation mode has no effect on the morphology of precursor or sample, but has great influence on the crystal structure, the average Ni oxidation state and the electrochemical performance of the sample. The higher the average Ni oxidation state in the precursor, the better the electrochemical performance of the sample.
The precursor prepared by "liquid-liquid preoxidation" method is Ni0.80Co0.15Al0.05OOH, and the average oxidation state of Ni is +3.0. The cathode MATERIAL obtained by the precursor was calcination at 750℃ for 10h in oxygen atmosphere. PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC for iron removal showed the lowest degree of cationic mixing, the most ordered structure, the highest average Ni oxidation state and the best electrochemical performance. The initial discharge specific capacity reached 192.1mA·h/g at 2.8-4.3V and 0.2C, and the capacity retention rate was 94.8% after 50 cycles.
Batch process: With the rapid development of new energy vehicles, the energy density of power batteries is increasingly required, and high nickel MATERIAL has become the current first choice. The precursor of PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC production by continuous method is easy to lead to particle agglomeration in high temperature sintering section due to wide particle size distribution and much fine powder. It affects the comprehensive properties of materials.
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