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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 9819007 B1

PDFFull Text
Date of Patent:
Nov. 14, 2017

Filed:

Oct. 03, 2012

Negative-electrode material and negative electrode for use in lithium-ion secondary battery as well as lithium-ion secondary battery

Applicant:

Kabushiki Kaisha Toyota Jidoshokki, Kariya-shi, Aichi, JP;

Inventors:

Yuichi Hirakawa, Kariya, JP;

Manabu Miyoshi, Kariya, JP;

Hideaki Shinoda, Kariya, JP;

Takayuki Kato, Kariya, JP;

Keiichi Hayashi, Kariya, JP;

Kayo Mizuno, Kariya, JP;

Yoshikatsu Kawabata, Kariya, JP;

Megumi Yamamoto, Kariya, JP;

Assignee:

KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Kariya-Shi, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Brittany Raymond

Int. Cl.
CPC ...
H01M 4/38 (2006.01); H01M 10/0525 (2010.01); H01M 10/0569 (2010.01); H01M 4/134 (2010.01); H01M 4/04 (2006.01); H01M 4/131 (2010.01); H01M 4/48 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/62 (2006.01); H01M 4/66 (2006.01); H01M 4/70 (2006.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/134 (2013.01); H01M 4/0409 (2013.01); H01M 4/0471 (2013.01); H01M 4/131 (2013.01); H01M 4/38 (2013.01); H01M 4/381 (2013.01); H01M 4/386 (2013.01); H01M 4/387 (2013.01); H01M 4/483 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/623 (2013.01); H01M 4/625 (2013.01); H01M 4/661 (2013.01); H01M 4/70 (2013.01); H01M 10/0525 (2013.01); H01M 10/0569 (2013.01); H01M 2004/021 (2013.01); H01M 2220/20 (2013.01); H01M 2220/30 (2013.01); H01M 2300/004 (2013.01); Y02T 10/7011 (2013.01);
Abstract

A negative-electrode material has negative-electrode active-material particles including: an element being capable of sorbing and desorbing lithium ions, and being capable of undergoing an alloying reaction with lithium; or/and an elementary compound being capable of undergoing an alloying reaction with lithium. The negative-electrode active-material particles includes particles whose particle diameter is 1 μm or more in an amount of 85% by volume or more of them when the entirety is taken as 100% by volume, exhibit a BET specific surface area that is 6 m/g or less, and exhibits a 'D' that is 4.5 μm or more.

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