High-nickel type lithium Ni-Co manganate precursor with specific morphology and preparation method thereof
A technology of nickel cobalt lithium manganate and precursor, which is applied in the field of nickel cobalt lithium manganate precursor and its preparation, can solve the problem that the morphology sphericity of high nickel precursor has not been fully explained, and the key process parameters have not been paid enough attention to. The problems of limited primary particle morphology, etc., can enhance the nucleation effect, solve the nucleation difficulties, and improve the sphericity.
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[0060] Example 1:
[0061] A kind like Figure 1-Figure 7 The high-nickel type lithium nickel cobalt manganate precursor with a specific morphology of the present invention is shown, and the molecular formula of the high-nickel type lithium nickel cobalt manganate precursor is Ni 0.8 Co 0.1 Mn 0.1 (OH) 2 The average particle size of the primary particles of the high-nickel lithium nickel cobalt manganate precursor is 300-400nm; the particle size of the secondary particle agglomerates is D5=6.56μm, D10=7.84μm, D50=15.72μm, D90=29.7μm , D100=45.44μm (see figure 1 ). The half-value width of the 001 crystal plane of the high-nickel lithium nickel cobalt manganese oxide precursor is F001=0.534 (see Figure 7 ),Such as Image 6 As shown, the particle cross-section shows that the internal growth direction of the crystal is radial. The tap density of the high-nickel lithium nickel cobalt manganese oxide precursor is 2.15 g / cm 3 , The specific surface area is 11.1m 2 / g, bulk density 1.9...
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[0079] Example 2:
[0080] Kind of like Figure 15-20 The high nickel type lithium nickel cobalt manganate precursor with a specific morphology of the present invention is shown, and the molecular formula of the high nickel type lithium nickel cobalt manganate precursor is Ni 0.8 Co 0.1 Mn 0.1 (OH) 2 The average particle size of the primary particles of the high-nickel lithium nickel cobalt manganate precursor is 300-400nm; the particle size of the secondary particle agglomerates, D10=8.28μm, D50=12.19μm, D90=17.91μm (see Figure 15 ). The half-value width of the 001 crystal plane of the high-nickel lithium nickel cobalt manganate precursor is F001=0.546 (see Figure 21 );Such as Picture 20 As shown, the particle cross-section shows that the internal growth direction of the crystal is radial. The tap density of the high-nickel lithium nickel cobalt manganese oxide precursor is 2.12 g / cm 3 , The specific surface area is 10.69m 2 / g, bulk density 1.83g / cm 3 , S content = 0.17%. by...
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[0089] Example 3
[0090] Kind of like Figure 22-Figure 27 The high nickel type lithium nickel cobalt manganate precursor with a specific morphology of the present invention is shown, and the molecular formula of the high nickel type lithium nickel cobalt manganate precursor is Ni 0.8 Co 0.1 Mn 0.1 (OH) 2 The average particle size of the primary particles of the high-nickel lithium nickel cobalt manganate precursor is 400-500nm; the particle size of the secondary particle agglomerates is D10=7.25μm, D50=11.37μm, D90=17.69μm (see Figure 22 ). The half width of the 001 crystal plane of the high-nickel lithium nickel cobalt manganese oxide precursor is F001=0.534 (see Figure 28 );Such as Figure 27 As shown, the particle cross-section shows that the internal growth direction of the crystal is radial. The tap density of the high-nickel lithium nickel cobalt manganese oxide precursor is 2.08 g / cm 3 , The specific surface area is 10.2m 2 / g, bulk density 1.94g / cm 3 , S content = 0.12...
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