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Composite oxides containing lithium, nickel, cobalt, manganese, material as active material for positive electrolyte secondary to lithium secondary batteries, and methods for their preparation
Composite oxides containing lithium, nickel, cobalt, manganese, material as active material for positive electrolyte secondary to lithium secondary batteries, and methods for their preparation
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机译:包含锂,镍,钴,锰的复合氧化物,作为锂二次电池二次电解质的正极活性材料,及其制备方法
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摘要
Coagulated particles of nickel-cobalt-manganese hydroxide wherein primary particles are coagulated to form secondary particles are synthesized by allowing an aqueous solution of a nickel-cobalt-manganese salt, an aqueous solution of an alkali-metal hydroxide, and an ammonium-ion donor to react under specific conditions; and a lithium-nickel-cobalt-manganese-containing composite oxide represented by a general formula, LipNixMn1-x-yCoyO2-qFq (where 0.98p1.07, 0.3x0.5, 0.1y0.38, and 0q0.05), which is a positive electrode active material for a lithium secondary cell having a wide usable voltage range, a charge-discharge cycle durability, a high capacity and high safety, is obtained by dry-blending coagulated particles of nickel-cobalt-manganese composite oxyhydroxide formed by making an oxidant to act on the coagulated particles with a lithium salt, and firing the mixture in an oxygen-containing atmosphere.
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