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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10559810 B1

PDFFull Text
Date of Patent:
Feb. 11, 2020

Filed:

Jul. 09, 2015

Positive electrode active material, positive electrode, battery, battery pack, electronic device, electric vehicle, power storage device, and power system

Applicant:

Murata Manufacturing Co., Ltd., Kyoto, JP;

Inventors:

Asuki Yanagihara, Fukushima, JP;

Shingo Nakasato, Fukushima, JP;

Yuki Niwata, Fukushima, JP;

Yosuke Hosoya, Fukushima, JP;

Assignee:

Murata Manufacturing Co., Ltd., Kyoto, JP;

Attorney:

K&L Gates LLP

Primary Examiner:

Lingwen R Zeng

Int. Cl.
CPC ...
H01M 4/131 (2010.01); C01G 53/00 (2006.01); C01F 7/02 (2006.01); C01F 5/02 (2006.01); C01G 53/04 (2006.01); C01G 45/02 (2006.01); C01G 25/02 (2006.01); C01G 23/047 (2006.01); C01B 35/10 (2006.01); C01G 41/02 (2006.01); C01B 25/12 (2006.01); C01D 15/04 (2006.01); C01G 45/12 (2006.01); C01B 25/45 (2006.01); C01G 23/00 (2006.01); C01B 25/30 (2006.01); C01F 5/28 (2006.01); H01M 4/525 (2010.01); H01M 4/505 (2010.01); H01M 4/36 (2006.01); H01M 4/48 (2010.01); B60K 6/46 (2007.10); C01G 51/00 (2006.01); H01M 2/16 (2006.01); H01M 4/133 (2010.01); H01M 4/50 (2010.01); H01M 4/52 (2010.01); H01M 4/58 (2010.01); H01M 4/587 (2010.01); H01M 4/62 (2006.01); H01M 4/66 (2006.01); H01M 10/0525 (2010.01); H01M 10/0568 (2010.01); H01M 10/0569 (2010.01); H01M 10/42 (2006.01); B60K 6/48 (2007.10); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/131 (2013.01); B60K 6/46 (2013.01); C01B 25/12 (2013.01); C01B 25/30 (2013.01); C01B 25/45 (2013.01); C01B 35/1027 (2013.01); C01D 15/04 (2013.01); C01F 5/02 (2013.01); C01F 5/28 (2013.01); C01F 7/02 (2013.01); C01G 23/005 (2013.01); C01G 23/047 (2013.01); C01G 25/02 (2013.01); C01G 41/02 (2013.01); C01G 45/02 (2013.01); C01G 45/1242 (2013.01); C01G 51/42 (2013.01); C01G 53/04 (2013.01); C01G 53/50 (2013.01); H01M 2/1653 (2013.01); H01M 4/133 (2013.01); H01M 4/366 (2013.01); H01M 4/483 (2013.01); H01M 4/502 (2013.01); H01M 4/505 (2013.01); H01M 4/523 (2013.01); H01M 4/525 (2013.01); H01M 4/587 (2013.01); H01M 4/5825 (2013.01); H01M 4/623 (2013.01); H01M 4/625 (2013.01); H01M 4/661 (2013.01); H01M 10/0525 (2013.01); H01M 10/0568 (2013.01); H01M 10/0569 (2013.01); H01M 10/425 (2013.01); B60K 6/48 (2013.01); C01P 2004/82 (2013.01); C01P 2006/40 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01); H01M 2220/20 (2013.01); H01M 2220/30 (2013.01); H01M 2300/0037 (2013.01);
Abstract

A positive electrode active material includes: a particle including a lithium composite oxide; a first layer that is provided on a surface of the particle and includes a lithium composite oxide; and a second layer that is provided on a surface of the first layer. The lithium composite oxide included in the particle and the lithium composite oxide included in the first layer have the same composition or almost the same composition, the second layer includes an oxide or a fluoride, and the lithium composite oxide included in the first layer has lower crystallinity than the lithium composite oxide included in the particle.

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