Patent ID: 11923533
Assignee: SUMITOMO METAL MINING CO., LTD.
Field: nan (nan)
Classification: CPC nan | IPC H

Claim 0:
1. A non-aqueous electrolyte secondary battery comprising a positive electrode, a negative electrode and a non-aqueous electrolyte, wherein
the positive electrode is provided with a positive electrode active substance layer,
the positive electrode active substance layer contains a lithium composite oxide having a layered structure,
the lithium composite oxide includes a porous particle,
the average void ratio of the porous particle is not less than 12% but not more than 50%,
the porous particle contains two or more voids having diameters that are each at least 8% of the particle diameter of the porous particle,
the surface of the porous particle is provided with a coating of lithium tungstate, and
the coverage ratio of the surface of the porous particle by the lithium tungstate is not less than 10% but not more than 65%.