IDiyas

For the Inventor, By the Inventor

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 11522196 B1

PDFFull Text
Date of Patent:
Dec. 06, 2022

Filed:

Nov. 14, 2018

Anode active material, preparation method therefor, and nonaqueous lithium secondary battery comprising same anode active material, and preparation method therefor

Applicants:

Korea Electrotechnology Research Institute, Changwon, KR;

University-industry Cooperation Group of Kyung Hee University, Yongin, KR;

Inventors:

Sang Min Lee, Changwon, KR;

Min Sik Park, Suwon, KR;

Gum Jae Park, Changwon, KR;

Ha Young Lim, Bucheon, KR;

Jeong Hee Choi, Busan, KR;

Assignees:

KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE, Changwon, KR;

UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY, Yongin, KR;

Attorney:
Primary Examiner:

Sarah A Slifka

Int. Cl.
CPC ...
H01M 4/62 (2006.01); C01B 25/08 (2006.01); H01M 4/36 (2006.01); H01M 4/58 (2010.01); H01M 4/587 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/628 (2013.01); C01B 25/08 (2013.01); H01M 4/366 (2013.01); H01M 4/5805 (2013.01); H01M 4/587 (2013.01); H01M 10/0525 (2013.01); C01P 2002/72 (2013.01); C01P 2002/85 (2013.01); C01P 2004/03 (2013.01); C01P 2004/04 (2013.01); C01P 2004/80 (2013.01); C01P 2006/40 (2013.01); H01M 2004/027 (2013.01);
Abstract

The present invention relates to an anode active material, a nonaqueous lithium secondary battery comprising the same, and a preparation method therefor, and the purpose of the present invention is to improve high-rate charging characteristics without deterioration of charging and discharging efficiency and lifetime characteristics when applying an amorphous carbon coating layer as the anode active material of the nonaqueous lithium secondary battery, wherein the amorphous carbon coating layer comprising MoPx particles composed of MoP and MoPis formed on the surface of a carbon-based material, thereby reducing resistance when intercalating lithium ions into the surface of the carbon-based material, and improving reactivity and structural stability of the surface. The anode active material according to the present invention comprises a carbon-based material, and an amorphous carbon coating layer comprising MoPx particles composed of MoP and MoPformed on the surface of the carbon-based material.

Find Patent Forward Citations

Loading…