Nickel-cobalt-manganese ternary material, preparation method thereof and lithium ion battery
A ternary material, nickel-cobalt-manganese technology, applied in the direction of battery electrodes, secondary batteries, chemical instruments and methods, etc., can solve the problems of increased production costs and low container utilization, and achieve the effect of ensuring yield and quality
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Embodiment 1
[0053] 4.313g lithium hydroxide monohydrate and 9.492g Ni were respectively added to the 50ml ball mill. 0.8 Co 0.1 Mn 0.1 (OH) 2 Precursor, 0.095g of graphite powder (the ratio of nickel-cobalt-manganese precursor mass to carbon source mass is 1:0.01) and 50g of agate balls. The mixture was ball-milled and mixed at 300 rpm for 2 hours, and calcined in an oxygen atmosphere for 12 hours with the treated container to obtain 811 nickel-cobalt-manganese ternary material; the treated container was covered with a 0.05mm thick silver sheet to cover the inner surface of the container.
[0054] During the calcination process, the powder product will not adhere to the silver metal foil, nor penetrate into the surface of the container, and the product is easy to take out. The crystal phase structure of the product is analyzed by X-ray diffraction technology, and the X-ray diffraction pattern is as follows figure 1 As shown, no impurity phase exists in the nickel-cobalt-manganese tern...
Embodiment 2
[0056] Different from Example 1, the container uses physical magnetron sputtering technology to sputter a layer of gold with a thickness of about 30 nm on the inner surface of the container, and the gold layer cannot be peeled off from the inner surface of the container. The rest of the procedure is the same as in Example 1.
[0057] During the calcination process, the powder product will not adhere to the inner surface of the container, and there is no trace of penetration into the container, and the product is easy to take out. Photos of the container before and after use such as Figure 4 As shown, the surface of the gold layer sputtered on the inner surface of the container hardly changed. The obtained product is made according to the method of Example 1 to make a button cell and charge and discharge, and the first charge-discharge curve of the battery at 0.1C is as follows: Figure 5 shown. The results show that the first discharge specific capacity of the material is ...
Embodiment 3
[0059] The graphitic carbon in Example 1 was changed to glucose, and the ratio of the mass of the nickel-cobalt-manganese precursor to the mass of the carbon source was 1:0.01, and the rest of the process was the same as that of Example 1. During the calcination process, the powder product will not stick to the surface of the silver flakes, and there is no trace of penetration into the container, and the product is easy to take out.
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