Patent ID: 11967701
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC C  H

Claim 0:
1. A non-aqueous electrolyte secondary battery comprising a positive electrode material,
the positive electrode material consisting of composite particles,
each of the composite particles including a base material particle, a film, and a carbon nanotube,
the film covering at least a part of a surface of the base material particle,
the base material particle including a positive electrode active material, the positive electrode active material comprising LiMeO2, Me denotes one or more metallic elements,
the film including a boron oxide,
the carbon nanotube including a first portion and a second portion,
the first portion being buried in the film,
the second portion being exposed on a surface of the film,
wherein a percentage of an amount of substance of boron to a total amount of substance of metal elements other than lithium contained in the positive electrode active material and boron measured by x-ray photoelectron spectroscopy is 80% or higher,
wherein a percentage of a mass of the carbon nanotube to a mass of the positive electrode active material is from 0.02% to 0.06%,
wherein a capacity retention of the non-aqueous electrolyte secondary battery is greater than or equal to 97.3%, wherein the capacity retention is a percentage of a 100th cycle discharged capacity to a 1st cycle discharged capacity, and
wherein a battery resistance of the non-aqueous electrolyte secondary battery is less than or equal to 42.7 mΩ.