LITHIUM MANGANESE OXIDE COMPOSITE, SECONDARY BATTERY, AND MANUFACTURING METHOD THEREOF

摘要

To increase the amount of lithium ions that can be received and released in and from a positive electrode active material to achieve high capacity and high energy density of a secondary battery. A composite material of crystallites of LiMn2O4 (crystallites with a spinel crystal structure) and crystallites of Li2MnO3 (crystallites with a layered rock-salt crystal structure) is used as a positive electrode active material. The lithium manganese oxide composite has high structural stability and high capacity.

主权项

1. A particle comprising:
a first crystallite with a layered rock-salt crystal structure; and a second crystallite with a spinel crystal structure in part of a surface of the particle, wherein a percentage of part with a layered rock-salt crystal structure in the particle is 50% or more and 98% or less, and wherein the particle is lithium manganese oxide.