Author ：Iflowpower – Portable Power Station Supplier
Causes of the same components of the three-membered ratio of the three-yuan material, the main material particle size, morphology, lithiation ratio, calcined atmosphere, etc. 1 The magnification performance of the diameter material is better. To obtain a small particle diameter, it is necessary to calcine the precursor of the small particle size; or calcination of the three-membered material of the large particle size into small particles.
2. Different types of three-dimensional domains of different morphology are different, and the topography of loose porous is conducive to the infiltration of the electrolyte, shorten the diffusion path of lithium ions, so the magnification performance is better than the dense topography. Locus porous ternary material SEM is shown in Figure (a).
Realistic ternary material SEM as shown in Figure (b). SEM Figure for different magnification products MS MCC method prepared a three-dimensional material internally a porous structure, as shown in Figure (a). The left side of the figure is the material prepared by conventional coprecipitation method, and the inside of the material can be seen.
The material prepared by the MCC method in the figure, there is a large number of pores inside. The magnification performance of the two materials is shown in Fig. (B), it can be seen that the internal pores of the material is significantly better than internal sturdy materials.
3, lithiation ratio lithiated ratio can affect the magnification performance of the material. The US Argonne laboratory contrasts the magnification performance of two samples of 0.05 differentiated phase difference, as shown, "x = 0" represents the sample molecular formula to: Li1.
0 (Mn4 / 9CO1 / 9NI4 / 9) ) O2; "x = 0.05" means that the sample molecular formula is: Li1.05 (Mn4 / 9CO1 / 9NI4 / 9) 0.
95O2. As can be seen from the figure, there is no difference in capacity of two samples (C / 12) at low rate (C / 12), but with the increase of the charge and discharge ratio, the high lithiation ratio of sample magnification is significantly better than low lithiature. Ratio.
Researchers believe that high lithiative comparison material excellent performance is its high electrical conductivity. Different lithiated ratios of the three-dimensional material multiplier performance comparison 4, the calcined atmosphere calcined atmosphere is oxygen and air, respectively. As can be seen from the figure, in the case of 0.
1c and 0.2c, there is no significant difference in the air atmosphere and the oxygen atmosphere material, but as the magnification is rising, the calcined material in the oxygen atmosphere is superior to the air calcined material. And the materials of five different components have the same trend.
However, the atmosphere affects the effect of materials of different components. The researchers believe that the oxygen atmosphere reduces the cationic mix of the material, thereby making materials have better magnification performance. Three-dollar material multiplier performance compared with China Powder Net.
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