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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 9525170 B1

PDFFull Text
Date of Patent:
Dec. 20, 2016

Filed:

Aug. 03, 2012

Negative active material and lithium battery including negative active material

Applicants:

Ui-song DO, Yongin-si, KR;

Chang-su Shin, Yongin-si, KR;

So-ra Lee, Yongin-si, KR;

Beom-kwon Kim, Yongin-si, KR;

Jae-myung Kim, Yongin-si, KR;

Inventors:

Ui-Song Do, Yongin-si, KR;

Chang-Su Shin, Yongin-si, KR;

So-Ra Lee, Yongin-si, KR;

Beom-Kwon Kim, Yongin-si, KR;

Jae-Myung Kim, Yongin-si, KR;

Assignee:

Samsung SDI Co., Ltd., Giheung-gu, Yongin-si, Gyeonggi-do, KR;

Attorney:

Robert E. Bushnell, Esq.

Primary Examiner:

Ula C Ruddock

Assistant Examiner:

Matthew Van Oudenaren

Int. Cl.
CPC ...
H01M 4/587 (2010.01); H01M 4/38 (2006.01); H01M 4/40 (2006.01); H01M 4/48 (2010.01); H01M 4/60 (2006.01); B82Y 30/00 (2011.01); H01M 4/134 (2010.01); H01M 4/1395 (2010.01); H01M 4/36 (2006.01); H01M 4/62 (2006.01); H01M 10/052 (2010.01);
U.S. Cl.
CPC ...
H01M 4/386 (2013.01); B82Y 30/00 (2013.01); H01M 4/134 (2013.01); H01M 4/1395 (2013.01); H01M 4/366 (2013.01); H01M 4/625 (2013.01); H01M 10/052 (2013.01); Y02E 60/122 (2013.01); Y02T 10/7011 (2013.01);
Abstract

A negative active material and a lithium battery including the negative active material. The negative active material includes a non-carbonaceous nanoparticle capable of doping or undoping lithium; and a crystalline carbonaceous nano-sheet, wherein at least one of the non-carbonaceous nanoparticle and the crystalline carbonaceous nano-sheet includes a first amorphous carbonaceous coating layer on its surface, and thus an electrical conductivity thereof is improved. In addition, a lithium battery including the negative active material has an improved efficiency and lifetime.

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