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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 10665855 B1

PDFFull Text
Date of Patent:
May. 26, 2020

Filed:

Oct. 04, 2013

Active material, method of manufacturing active material, electrode, and secondary battery

Applicant:

Murata Manufacturing Co., Ltd., Kyoto, JP;

Inventors:

Takeshi Morozumi, Kanagawa, JP;

Keitaro Kitada, Kanagawa, JP;

Yoshihide Nagata, Tokyo, JP;

Takatoshi Munaoka, Kanagawa, JP;

Kenji Matsubara, Kanagawa, JP;

Yuko Ohtaniuchi, Kanagawa, JP;

Aiko Kanazawa, Kanagawa, JP;

Nobuyuki Nagaoka, Kanagawa, JP;

Masahiro Kikkawa, Kanagawa, JP;

Assignee:

MURATA MANUFACTURING CO., LTD., Kyoto, JP;

Attorney:

Chip Law Group

Primary Examiner:

Lisa S Park

Int. Cl.
CPC ...
H01M 4/26 (2006.01); H01M 4/04 (2006.01); H01M 4/48 (2010.01); H01M 4/587 (2010.01); H01M 10/0525 (2010.01); H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/134 (2010.01); H01M 4/133 (2010.01); H01M 4/02 (2006.01); H01M 10/0563 (2010.01);
U.S. Cl.
CPC ...
H01M 4/366 (2013.01); H01M 4/0404 (2013.01); H01M 4/0471 (2013.01); H01M 4/133 (2013.01); H01M 4/134 (2013.01); H01M 4/364 (2013.01); H01M 4/387 (2013.01); H01M 4/48 (2013.01); H01M 4/587 (2013.01); H01M 10/0525 (2013.01); H01M 10/0563 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); H01M 2220/10 (2013.01); H01M 2220/20 (2013.01); H01M 2220/30 (2013.01); Y02T 10/7011 (2013.01);
Abstract

A secondary battery includes a cathode, an anode including an active material, and non-aqueous electrolytic solution. The active material includes a center portion and a covering portion provided on part or all of the center portion. The center portion includes silicon, tin, or both as constituent elements. The covering portion includes a plurality of fibrous carbon materials. Part or all of the fibrous carbon materials extend in a direction along a surface of the center portion and are closely attached to the center portion.

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