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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 10862122 B1

PDFFull Text
Date of Patent:
Dec. 08, 2020

Filed:

Feb. 22, 2017

Negative electrode active material, mixed negative electrode active material, method for producing negative electrode active material

Applicant:

Shin-etsu Chemical Co., Ltd., Tokyo, JP;

Inventors:

Hiromichi Kamo, Takasaki, JP;

Takakazu Hirose, Annaka, JP;

Assignee:

SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;

Attorney:

Oliff PLC

Primary Examiner:

Cynthia K Walls

Int. Cl.
CPC ...
H01M 4/134 (2010.01); H01M 4/58 (2010.01); C01B 33/32 (2006.01); H01M 4/587 (2010.01); C01B 33/113 (2006.01); H01M 4/485 (2010.01); H01M 4/60 (2006.01); H01M 4/48 (2010.01); H01M 4/36 (2006.01); H01M 4/62 (2006.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/5825 (2013.01); C01B 33/113 (2013.01); C01B 33/32 (2013.01); H01M 4/36 (2013.01); H01M 4/366 (2013.01); H01M 4/48 (2013.01); H01M 4/485 (2013.01); H01M 4/587 (2013.01); H01M 4/60 (2013.01); H01M 4/622 (2013.01); C01P 2002/60 (2013.01); C01P 2002/72 (2013.01); C01P 2002/86 (2013.01); C01P 2004/61 (2013.01); C01P 2006/40 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01);
Abstract

A negative electrode active material which is a negative electrode active material containing particles of a negative electrode active material, wherein the particles of the negative electrode active material contain particles of a silicon compound which contain a silicon compound (SiO: 0.5≤x≤1.6), the particles of the negative electrode active material contain lithium, and the particles of the negative electrode active material have a peak in the range of 2θ=31.8±0.5° measured by X-ray diffraction spectrum using Kα line of Cu. According to this constitution, it is provided a negative electrode active material capable of improving cycle characteristics and initial charge and discharge characteristics when it is used as a negative electrode active material of a lithium ion secondary battery.

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