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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 9082525 B1

PDFFull Text
Date of Patent:
Jul. 14, 2015

Filed:

Oct. 12, 2012

Lithium silicate-based compound and production process for the same, positive-electrode active material and positive electrode for use in lithium-ion secondary battery as well as secondary battery

Applicants:

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

National Institute of Advanced Industrial Science and Technology, Chiyoda-ku, Tokyo, JP;

Inventors:

Akira Kojima, Kariya, JP;

Toshikatsu Kojima, Ikeda, JP;

Mitsuharu Tabuchi, Ikeda, JP;

Tetsuo Sakai, Ikeda, JP;

Takuhiro Miyuki, Ikeda, JP;

Junichi Niwa, Kariya, JP;

Kazuhito Kawasumi, Kariya, JP;

Masakazu Murase, Kariya, JP;

Assignees:

KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Aichi, JP;

NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, Tokyo, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Mark Kopec

Assistant Examiner:

Matthew R Diaz

Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 4/525 (2010.01); H01M 4/1315 (2010.01); H01M 4/13915 (2010.01); H01M 4/505 (2010.01); H01M 4/58 (2010.01); H01M 10/052 (2010.01); H01B 1/08 (2006.01); C01B 33/32 (2006.01);
U.S. Cl.
CPC ...
H01B 1/08 (2013.01); C01B 33/32 (2013.01); H01M 4/1315 (2013.01); H01M 4/13915 (2013.01); H01M 4/364 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/5825 (2013.01); H01M 10/052 (2013.01); Y02E 60/122 (2013.01); Y02T 10/7011 (2013.01);
Abstract

A lithium silicate-based compound according to the present invention is expressed by a general formula, LiAMnCoMSiOCl(In the formula: 'A' is at least one element selected from the group consisting of Na, K, Rb and Cs; 'M' is at least one member selected from the group consisting of Mg, Ca, Al, Ni, Fe, Nb, Ti, Cr, Cu, Zn, Zr, V, Mo and W; and the respective subscripts appear to be as follows: 0≦“a”<0.2; 0≦“b”<1; 0<“x”<1; 0≦“y”≦0.5; −0.25≦“α”≦1.25; and 0≦“β”≦0.05). The lithium silicate-based compound is used as a positive-electrode active material for secondary battery whose discharge average voltage is higher, and which is able to sorb and desorb lithium ions.

Find Patent Forward Citations

Kojima, Akira. (2015). Lithium silicate-based compound and production process for the same, positive-electrode active material and positive electrode for use in lithium-ion secondary battery as well as secondary battery (U.S. Patent No. 9082525). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9082525

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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