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Positive Electrode active material for non-aqueous electrolyte-based secondary battery, production method therefor and non-aqueous electrolyte-based secondary battery using the same
Positive Electrode active material for non-aqueous electrolyte-based secondary battery, production method therefor and non-aqueous electrolyte-based secondary battery using the same
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机译:用于非水电解质基二次电池的正极活性材料,其制备方法和使用其的非水电解质基二次电池
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摘要
The present invention provides a positive electrode active material for a non-aqueous electrolyte-based secondary battery, composed of a lithium/nickel composite oxide with high capacity, low cost and excellent heat stability, an industrially suitable production method therefor, and a high safety non-aqueous electrolyte-based secondary battery. A lithium/nickel composite oxide is produced by the following steps (a) to (c):(a) Nickel hydroxide or nickel oxyhydroxide having a specified component is prepared at a temperature of 600 to 1100° C., under air atmosphere.(b) Fired powders are prepared after mixing said nickel oxide and a lithium compound, and then by firing at a maximal temperature range of 650 to 850° C., under oxygen atmosphere.(c) Obtained fired powders are washed with water within a time satisfying the following equation (2) and then filtered and dried.A≦B/40 (2)wherein, A represents washing time represented by unit of minute; and B represents slurry concentration represented by unit of g/L).展开▼