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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 10388951 B1

PDFFull Text
Date of Patent:
Aug. 20, 2019

Filed:

Sep. 12, 2016

Composite anode active material, lithium battery including the same, and method of preparing the composite anode active material

Applicant:

Samsung Sdi Co., Ltd., Yongin-si, Gyeonggi-do, KR;

Inventors:

Jiyeon Kwak, Yongin-si, KR;

Youngugk Kim, Yongin-si, KR;

Heeseon Choi, Yongin-si, KR;

Yeongap Kim, Yongin-si, KR;

Assignee:

Samsung SDI Co., Ltd., Yongin-si, KR;

Attorney:

Lewis Roca Rothgerber Christie LLP

Primary Examiner:

Laura Weiner

Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 4/1393 (2010.01); H01M 10/0525 (2010.01); H01M 4/38 (2006.01); H01M 4/58 (2010.01); H01M 4/583 (2010.01); H01M 4/134 (2010.01); H01M 4/136 (2010.01); H01M 4/133 (2010.01); H01M 4/1395 (2010.01); H01M 4/1397 (2010.01); H01M 4/587 (2010.01); H01M 10/052 (2010.01);
U.S. Cl.
CPC ...
H01M 4/366 (2013.01); H01M 4/133 (2013.01); H01M 4/134 (2013.01); H01M 4/136 (2013.01); H01M 4/1393 (2013.01); H01M 4/1395 (2013.01); H01M 4/1397 (2013.01); H01M 4/362 (2013.01); H01M 4/38 (2013.01); H01M 4/386 (2013.01); H01M 4/58 (2013.01); H01M 4/583 (2013.01); H01M 4/587 (2013.01); H01M 10/052 (2013.01); H01M 10/0525 (2013.01); Y02T 10/7011 (2013.01);
Abstract

A composite anode active material includes: a core portion including a crystalline carbonaceous material; a shell portion including a plurality of composite particles deposited on at least a portion of the core portion, wherein each of the composite particles includes a metallic core that is alloyable with lithium; and a coating layer including metal nitride on the surface of the metallic core in an island pattern. A lithium battery including the composite anode active material and a method of preparing the composite anode active material are also provided.

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