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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 10418629 B1

PDFFull Text
Date of Patent:
Sep. 17, 2019

Filed:

Mar. 20, 2015

Composite active material for lithium ion secondary batteries and method for producing same

Applicant:

Tosoh Corporation, Shunan-shi, Yamaguchi, JP;

Inventors:

Hidehiko Misaki, Ayase, JP;

Masanori Abe, Ayase, JP;

Toru Tsuyoshi, Ayase, JP;

Masanori Kohgo, Ayase, JP;

Shuji Takato, Ayase, JP;

Taichi Arakawa, Ayase, JP;

Kohei Iwanaga, Ayase, JP;

Assignee:

TOSOH CORPORATION, Shunan-shi, Yamaguchi, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Karie O'Neill Apicella

Int. Cl.
CPC ...
H01M 2/00 (2006.01); H01M 2/16 (2006.01); H01M 2/18 (2006.01); H01M 4/38 (2006.01); H01M 4/04 (2006.01); H01M 4/1393 (2010.01); H01M 4/1395 (2010.01); H01M 4/36 (2006.01); H01M 4/587 (2010.01); H01M 4/133 (2010.01); H01M 4/134 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01); H01M 10/052 (2010.01);
U.S. Cl.
CPC ...
H01M 4/386 (2013.01); H01M 4/0471 (2013.01); H01M 4/133 (2013.01); H01M 4/134 (2013.01); H01M 4/1393 (2013.01); H01M 4/1395 (2013.01); H01M 4/364 (2013.01); H01M 4/366 (2013.01); H01M 4/587 (2013.01); H01M 10/0525 (2013.01); H01M 10/052 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01);
Abstract

Provided are: an anode active material for a lithium ion secondary battery with which high initial efficiency and battery capacity can be maintained and excellent cycling characteristics are achieved; and a method for producing such an active material. The anode active material for a lithium ion secondary battery, the active material comprising a Si compound and a carbonaceous material or a carbonaceous material and graphite, is obtained by a method comprising the steps of:

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