POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Abstract

The present disclosure relates to a method of manufacturing a positive electrode active material for nonaqueous electrolyte secondary batteries that comprises a lithium transition metal composite oxide containing at least 80 mol% Ni with reference to the total number of moles of metal elements excluding Li, and that has B present on the particle surface of at least this composite oxide. Assuming that a particle having a particle diameter larger than the 70% volume-based particle diameter (D70) is denoted as a first particle and a particle having a particle diameter smaller than the 30% volume-based particle diameter (D30) is denoted as a second particle, the mole fraction of B, with reference to the total number of moles of metal elements excluding Li, in the first particle is larger than the mole fraction of B, with reference to the total number of moles of metal elements excluding Li, in the second particle.

Inventors

GOTO, NATSUMI
KO, Takashi
SUZUKI, SHINYA
NIINA, FUMIHARU
TSURUTA, SHO

Assignees

Panasonic Holdings Corporation

Dates

Publication Date: 20260506
Application Date: 20200825