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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 10431826 B1

PDFFull Text
Date of Patent:
Oct. 01, 2019

Filed:

Aug. 26, 2014

Nonaqueous electrolyte secondary battery

Applicant:

Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;

Inventor:

Yoshitomo Takebayashi, Toyota, JP;

Assignee:

TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Lisa S Park

Int. Cl.
CPC ...
H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/131 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/0569 (2010.01); H01M 10/052 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/62 (2013.01); H01M 4/131 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/628 (2013.01); H01M 10/0525 (2013.01); H01M 10/0569 (2013.01); H01M 10/052 (2013.01); H01M 2004/028 (2013.01); H01M 2220/20 (2013.01); H01M 2300/0034 (2013.01);
Abstract

According to the present invention, a nonaqueous electrolyte secondary battery that includes a positive electrode, a negative electrode and a nonaqueous electrolyte is provided. The positive electrode has an operation upper limit potential of 4.3 V or more based on metal lithium and includes a positive electrode active material and an inorganic phosphate compound that has ion conductivity. The inorganic phosphate compound is in a particle state. A ratio of particles having a particle size of 20 μm or more is 1% by volume or less when an entirety of the inorganic phosphate compound is set to 100% by volume. Further, a ratio of particles having a particle size of 10 μm or more may be 10% by volume or less when an entirety of the inorganic phosphate compound is set to 100% by volume.

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