Positive electrode active material for lithium-ion battery, positive electrode for lithium-ion battery, and lithium-ion battery
A positive active material and lithium-ion battery technology, applied in battery electrodes, electrolytes, secondary batteries, etc., can solve problems such as thermal runaway and fire
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Embodiment 1～4）
[0049] First, after suspending the added amount of lithium carbonate described in Table 1 in 3.2 L of pure water, 4.8 L of the metal salt solution was added. Here, in the metal salt solution, the nitrate hydrate of each metal was adjusted so that each metal had the composition ratio described in Table 1, and the total number of moles of the metal was adjusted to 14 moles.
[0050] Then, the suspended amount of lithium carbonate is based on Li x (Ni y M 1-y )O z The quantities that represent the product (the positive electrode material of the lithium ion secondary battery, that is, the positive electrode active material) and x are the values in Table 1, are calculated by the following equations.
[0051] W(g)=73.9×14×(1+0.5x)×A
[0052] In the above formula, A is a value multiplied by subtracting the amount of lithium in a lithium compound other than lithium carbonate remaining in the raw material after the filtration from the suspended amount in addition to the amount necessary f...
Embodiment 5
[0057] In Example 5, each metal of the raw material was made into the composition shown in Table 1, and the calcination was performed not under atmospheric pressure but under a pressure of 120 KPa, and the same treatment as in Examples 1 to 4 was performed. Furthermore, in Example 6, the same treatment as in Example 5 was performed except that each metal of the raw material was made into the composition shown in Table 1 and calcined under a pressure of 180 KPa.
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