Non-aqueous electrolyte secondary battery and positive electrode active material
AssigneesToyota Jidosha Kabushiki Kaisha, Daiichi Kigenso Kagaku Kogyo Co., Ltd.
InventorsRyuta Sugiura, Daisuke Horikawa, Sadahiro Yagishita, Taku Nishikawa
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Abstract
A non-aqueous electrolyte secondary battery disclosed herein includes a positive electrode containing a positive electrode active material, a negative electrode, and a non-aqueous electrolyte, and the positive electrode active material includes a positive electrode active material particle containing a lithium transition metal compound, and a coating portion coating at least a part of a surface of the positive electrode active material particle. The coating portion contains a lithium ionic conductor containing lithium, a phosphoric acid group, and at least one element of lanthanum (La) and cerium (Ce).
Claims6
A non-aqueous electrolyte secondary battery comprising:
- a positive electrode comprising a positive electrode active material;
- a negative electrode;
- and
- a non-aqueous electrolyte,
- wherein the positive electrode active material includes:
- a positive electrode active material particle containing a lithium transition metal compound;
- and
- a coating portion coating at least a part of a surface of the positive electrode active material particle, and
- the coating portion comprises a lithium ionic conductor consisting of LixMyPO4-z, wherein M is Ce, 1.5≤x≤4, 0.005≤y≤3, and 0≤z≤4.
A positive electrode active material comprising:
- a positive electrode active material particle containing a lithium transition metal compound;
- and
- a coating portion coating at least a part of a surface of the positive electrode active material particle,
- wherein the coating portion comprises a lithium ionic conductor consisting of LixMyPO4-z, wherein M is Ce, 1.5≤x≤4, 0.005≤y≤3, and 0≤z≤4.
Dependencies are inferred from the claim text.