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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 10211456 B1

PDFFull Text
Date of Patent:
Feb. 19, 2019

Filed:

Feb. 21, 2017

Positive electrode active material for lithium ion secondary battery, and lithium ion secondary battery positive electrode and lithium ion secondary battery using the same

Applicant:

Tdk Corporation, Tokyo, JP;

Inventors:

Hideaki Seki, Tokyo, JP;

Akinobu Nojima, Tokyo, JP;

Assignee:

TDK CORPORATION, Tokyo, JP;

Attorney:

Oliff PLC

Primary Examiner:

Brittany L Raymond

Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/58 (2010.01); H01M 10/0525 (2010.01); H01M 4/13 (2010.01);
U.S. Cl.
CPC ...
H01M 4/366 (2013.01); H01M 4/13 (2013.01); H01M 4/364 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/5825 (2013.01); H01M 10/0525 (2013.01);
Abstract

A positive electrode active material for a lithium ion secondary battery contains: a first compound represented by chemical formula Li(NiMa)O(0.95≤x≤1.05, 0.70≤y≤0.95, where Ma is at least one element selected from Co, Mn, V, Ti, Fe, Zr, Nb, Mo, Al, and W); and a second compound represented by chemical formula LiVOPO. W>5.0° C., where W is a full width at half maximum of an exothermic peak obtained between 150° C. and 260° C. by differential scanning calorimetry (DSC) performed on a mixture of the first compound and the second compound under a condition of 5° C./min.

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Seki, Hideaki. (2019). Positive electrode active material for lithium ion secondary battery, and lithium ion secondary battery positive electrode and lithium ion secondary battery using the same (U.S. Patent No. 10211456). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10211456

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