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NICKEL-MANGANESE-COBALT COMPOSITE HYDROXIDE, PRODUCTION METHOD FOR NICKEL-MANGANESE-COBALT COMPOSITE HYDROXIDE, LITHIUM-NICKEL-MANGANESE-COBALT COMPOSITE OXIDE, AND LITHIUM ION SECONDARY BATTERY
NICKEL-MANGANESE-COBALT COMPOSITE HYDROXIDE, PRODUCTION METHOD FOR NICKEL-MANGANESE-COBALT COMPOSITE HYDROXIDE, LITHIUM-NICKEL-MANGANESE-COBALT COMPOSITE OXIDE, AND LITHIUM ION SECONDARY BATTERY
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机译：镍锰钴复合氧化物，镍锰钴复合氧化物，锂镍锰锰钴复合氧化物和锂离子二次电池的生产方法
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摘要
Provided is a nickel-manganese-cobalt composite hydroxide that is a precursor for a positive electrode active material and is composed of secondary particles obtained by aggregating primary particles containing nickel, manganese and cobalt, or is composed of the primary particles and the secondary particles, said nickel-manganese-cobalt composite hydroxide being characterized in that the sodium content of the nickel-manganese-cobalt composite hydroxide is less than 0.0005 mass%, and the porosity of the nickel-manganese-cobalt composite hydroxide particles is greater than 50% but not greater than 80%. Further provided is a lithium-nickel-manganese-cobalt composite oxide characterized in that the ratio of the average particle size of the lithium-nickel-manganese-cobalt composite oxide divided by the average particle size of the nickel-manganese-cobalt composite hydroxide precursor thereof is 0.95-1.05, and when 100 or more randomly selected particles are observed using a scanning electron microscope, the number of observed secondary particle aggregates relative to the total number of observed secondary particles is 5% or less.
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