POSITIVE ELECTRODE ACTIVE SUBSTANCE PARTICLE POWDER FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, PRODUCTION METHOD THEREFOR, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

• Main Authors: KASHIMA, Tetsuya, KOGA, Kazumichi, MASAKI, Ryuta, YAMAMURA, Takayuki
• Format: Patent
• Language: English; French; German
• Published: 05.08.2020
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

An object of the present invention is to provide positive electrode active substance particles for non-aqueous electrolyte secondary batteries which are excellent in D.C. resistance characteristics under low-temperature conditions and a process for producing the provide positive electrode active substance particles, and a non-aqueous electrolyte secondary battery. The present invention relates to positive electrode active substance particles for non-aqueous electrolyte secondary batteries, comprising lithium composite oxide particles having a layered rock salt structure which are chemically reacted with at least Li and comprise at least one element selected from the group consisting of Ni, Co and Mn, and tungsten oxide particles, in which W is present in an amount of 0.1 to 4.0 mol% based on a total molar amount of Ni, Co and Mn in the lithium composite oxide particles, and the tungsten oxide particles have an average secondary particle diameter of 0.1 to 3.0 µ m.