A kind of high residual alkali lithium ion multiple positive electrode material and preparation method thereof
A positive electrode material, lithium ion technology, applied in the field of high residual alkali type lithium ion multi-component positive electrode material and its preparation, can solve problems such as battery failure, achieve the effect of improving electrochemical performance, improving overcharge safety performance, and stabilizing the structure
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[0032] The present invention will be described in detail below through specific embodiments.
[0033] see example Figure 1-5 and Table 1, the present invention provides the following technical solutions: a high residual alkali lithium ion multi-element positive electrode material is characterized in that: the general chemical formula of the positive electrode material is: Li a Ni x Co y Mn 1-x-y A z O 2 , where 0.90≤a≤1.12, 0≤x≤1, 0≤y≤1, x+y≤1, 0.01≤z≤0.15, A is a dopant; the lithium ion secondary battery cathode material is a primary Secondary particles or primary particles formed by agglomeration of particles, or mixed particles composed of primary particles and secondary particles.
[0034] Table 1
[0035] Sample type Lithium carbonate content / wt% Lithium hydroxide content / wt% Example 1.11 0.26 Commercially available 0.12 0.25
[0036] The preparation method of this embodiment comprises the following steps:
[0037] Preparation of ...
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