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.:
Date of Patent:
Apr. 20, 2021
Filed:
Jul. 11, 2018
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 10/0525 (2010.01); H01M 4/583 (2010.01); H01M 4/525 (2010.01); H01M 4/505 (2010.01); C01B 32/20 (2017.01); H01M 4/587 (2010.01); H01M 4/62 (2006.01); H01M 4/38 (2006.01); H01M 4/133 (2010.01); H01M 4/36 (2006.01); H01M 4/134 (2010.01); H01M 50/44 (2021.01); H01M 50/172 (2021.01); H01M 50/411 (2021.01); C01B 32/184 (2017.01); H01M 4/66 (2006.01); H01M 10/0569 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 10/0525 (2013.01); C01B 32/184 (2017.08); C01B 32/20 (2017.08); H01M 4/133 (2013.01); H01M 4/134 (2013.01); H01M 4/364 (2013.01); H01M 4/386 (2013.01); H01M 4/387 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/583 (2013.01); H01M 4/587 (2013.01); H01M 4/622 (2013.01); H01M 4/623 (2013.01); H01M 4/661 (2013.01); H01M 10/0569 (2013.01); H01M 50/172 (2021.01); H01M 50/411 (2021.01); H01M 50/44 (2021.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01);
Abstract
A negative electrode for a lithium ion secondary battery includes a current collector and an active material-containing layer disposed on the current collector. The active material-containing layer includes: a first negative electrode active material including a carbon material; a second negative electrode active material including a metal element or a metalloid element as a constituent element, the metal element or the metalloid element being capable of forming an alloy with lithium; and a binder. The first negative electrode active material contains a spherical graphite, and the binder contains an acrylic resin.