POSITIVE ELECTRODE ACTIVE MATERIAL PARTICLE POWDER FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, MANUFACTURING METHOD THEREOF, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

• Main Authors: KASHIMA TETSUYA, YAMAMURA TAKAYUKI, MASAKI RYUTA, KOGA KAZUMICHI
• Format: Patent
• Language: English; Japanese
• Published: 11.06.2020
• 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

To provide a positive electrode active material particle powder for a non-aqueous electrolyte secondary battery with excellent DC resistance at low temperature, a manufacturing method thereof, and a non-aqueous electrolyte secondary battery.SOLUTION: A positive electrode active material particle powder for a non-aqueous electrolyte secondary battery includes lithium composite oxide particles having a layered rock salt structure compounded with at least Li, and containing one or more elements selected from Ni, Co, and Mn, and tungsten oxide particles, and W is present in an amount of 0.1 to 4.0 mol% with respect to the total molar amount of Ni, Co, and Mn in the lithium composite oxide, and the average secondary particle diameter of the tungsten oxide particles is 0.1 to 3.0 μm.SELECTED DRAWING: None 【課題】低温での直流抵抗特性に優れた非水電解質二次電池用正極活物質粒子粉末及びその製造方法、並びに非水電解質二次電地の提供。【解決手段】少なくともＬｉと化合しＮｉ、Ｃｏ及びＭｎから選ばれる１種以上の元素を含有する層状岩塩構造のリチウム複合酸化物粒子と、タングステン酸化物粒子とを含有する正極活物質粒子粉末であって、該リチウム複合酸化物中のＮｉ、Ｃｏ及びＭｎの合計モル量に対し、Ｗが０．１〜４．０ｍｏｌ％存在し、タングステン酸化物粒子の平均二次粒子径が０．１〜３．０μｍである非水電解質二次電池用正極活物質粒子粉末。【選択図】なし