NICKEL-COBALT-MANGANESE COMPOUND PARTICLE POWDER AND METHOD FOR PRODUCING SAME, LITHIUM COMPOSITE OXIDE PARTICLE POWDER AND METHOD FOR PRODUCING SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

• Main Authors: KODAIRA TETSUYA, FUJINO SHOICHI, MASAKI RYUTA, YAMASAKI MINORU, OKINAKA KENJI, MORITA DAISUKE, KAJIYAMA AKIHISA, FUJITA KATSUHIRO, ITO AKINO, KOBINO MASASHI, YAMAMURA TAKAYUKI, OKAZAKI SEIJI, HIRAMOTO TOSHIAKI, ODA WATARU
• Format: Patent
• Language: English; Korean
• Published: 05.09.2012
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The present invention relates to nickel-cobalt-manganese-based compound particles which have a volume-based average secondary particle diameter (D50) of 3.0 to 25.0 µm, wherein the volume-based average secondary particle diameter (D50) and a half value width (W) of the peak in volume-based particle size distribution of secondary particles thereof satisfy the relational formula: W ‰¤ 0.4 x D50, and can be produced by dropping a metal salt-containing solution and an alkali solution to an alkali solution at the same time, followed by subjecting the obtained reaction solution to neutralization and precipitation reaction. The nickel-cobalt-manganese-based compound particles according to the present invention have a uniform particle size, a less content of very fine particles, a high crystallinity and a large primary particle diameter, and therefore are useful as a precursor of a positive electrode active substance used in a non-aqueous electrolyte secondary battery.