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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 10193150 B1

PDFFull Text
Date of Patent:
Jan. 29, 2019

Filed:

Jul. 03, 2015

Lithium ion secondary battery cathode material, lithium ion secondary battery cathode and lithium ion secondary battery that use same, and method for manufacturing lithium ion secondary battery cathode material

Applicant:

Hitachi Metals, Ltd., Tokyo, JP;

Inventors:

Xiaoliang Feng, Tokyo, JP;

Shuichi Takano, Tokyo, JP;

Takashi Nakabayashi, Tokyo, JP;

Akira Gunji, Tokyo, JP;

Assignee:

HITACHI METALS, LTD., Tokyo, JP;

Attorney:

Volpe and Koenig, P.C.

Primary Examiner:

Wyatt P McConnell

Int. Cl.
CPC ...
H01M 4/485 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/36 (2006.01); H01M 10/0525 (2010.01); C01G 51/00 (2006.01); C01G 53/00 (2006.01); H01M 4/131 (2010.01); H01M 4/02 (2006.01); C01G 45/12 (2006.01);
U.S. Cl.
CPC ...
H01M 4/485 (2013.01); C01G 51/50 (2013.01); C01G 53/50 (2013.01); H01M 4/131 (2013.01); H01M 4/362 (2013.01); H01M 4/364 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); C01G 45/1228 (2013.01); C01P 2002/20 (2013.01); C01P 2002/76 (2013.01); C01P 2004/50 (2013.01); C01P 2004/51 (2013.01); C01P 2004/61 (2013.01); C01P 2004/62 (2013.01); C01P 2006/40 (2013.01); H01M 2004/028 (2013.01); Y02T 10/7011 (2013.01);
Abstract

Provided are a cathode material for lithium ion secondary battery having excellent rate characteristics and cycle characteristics while a cathode active substance has high density, and a lithium ion secondary battery cathode and a lithium ion secondary battery that use the above cathode material. The cathode material for lithium ion secondary battery (), represented by LiM1M2O[where −0.1≤x≤0.3, 0≤y≤0.1; M1 is Ni, Co, Mn; and M2 is Mg, Al, Ti, Zr, Mo, Nb, Fe, B], is an agglomerate including secondary particles () both formed via aggregation of lithium metal composite oxide primary particles () having a layered structure. A mean porosity of the secondary particles having a particle size of more than 10 μm and equal to 50 μm or less is higher than that of the secondary particles having a particle size of 0.5 μm to 10 μm.

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