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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 10319996 B1

PDFFull Text
Date of Patent:
Jun. 11, 2019

Filed:

Jul. 31, 2015

Cathode material for lithium ion secondary battery, method of producing the same, and lithium ion secondary battery

Applicant:

Microvast Power Systems Co., Ltd., Huzhou, Zhejiang Province, CN;

Inventors:

Zhuoqun Zheng, Huzhou, CN;

Jian Qiu, Huzhou, CN;

Xiaozhen Zhao, Huzhou, CN;

Yunhua Nie, Huzhou, CN;

Assignee:

MICROVAST POWER SYSTEMS CO., LTD., Huzhou, Zhejiang Province, CN;

Attorney:

Cheng-Ju Chiang

Primary Examiner:

Ladan Mohaddes

Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 4/485 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/131 (2010.01); H01M 4/48 (2010.01); H01M 4/1391 (2010.01);
U.S. Cl.
CPC ...
H01M 4/366 (2013.01); H01M 4/131 (2013.01); H01M 4/1391 (2013.01); H01M 4/48 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01);
Abstract

The present invention discloses a cathode material for lithium ion secondary battery. The cathode material is in the form of powder particles. The powder particle includes a bulk portion and a coating portion coated on the outer surface of the bulk portion. The bulk portion is formed of at least one first cathode material which is a lithium-nickel based composite oxide. The first cathode material has electrochemical activity and has high charging-discharging specific capacity at a charged voltage of 4.2V versus Li/Li. The coating portion is formed of at least one second cathode material. The second cathode material has no electrochemical activity or has low charging-discharging specific capacity at a charged voltage of 4.2V versus Li/Li. Lithium ion secondary battery using the cathode material has high energy density, cycling stability, security, and output power.

Find Patent Forward Citations

Zheng, Zhuoqun. (2019). Cathode material for lithium ion secondary battery, method of producing the same, and lithium ion secondary battery (U.S. Patent No. 10319996). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10319996

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