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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 10601044 B1

PDFFull Text
Date of Patent:
Mar. 24, 2020

Filed:

Oct. 22, 2018

Negative electrode material for lithium-ion secondary battery, method for manufacturing negative electrode material for lithium-ion secondary battery, negative electrode material slurry for lithium-ion secondary battery, negative electrode for lithium-ion secondary battery, and lithium-ion secondary battery

Applicant:

Hitachi Chemical Company, Ltd., Tokyo, JP;

Inventors:

Hideyuki Tsuchiya, Tokyo, JP;

Takashi Sakamoto, Tokyo, JP;

Takeshi Masayoshi, Tokyo, JP;

Assignee:

HITACHI CHEMICAL COMPANY, LTD., Tokyo, JP;

Attorney:

Fitch, Even, Tabin & Flannery, L.L.P.

Primary Examiner:

Gary D Harris

Int. Cl.
CPC ...
H01M 4/587 (2010.01); C01B 32/20 (2017.01); H01M 4/04 (2006.01); H01M 4/133 (2010.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/587 (2013.01); C01B 32/20 (2017.08); H01M 4/0404 (2013.01); H01M 4/133 (2013.01); H01M 4/621 (2013.01); H01M 10/0525 (2013.01); C01P 2002/82 (2013.01); C01P 2004/03 (2013.01); C01P 2004/32 (2013.01); C01P 2006/11 (2013.01); C01P 2006/12 (2013.01); C01P 2006/14 (2013.01); C01P 2006/16 (2013.01); C01P 2006/40 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); H01M 2220/30 (2013.01);
Abstract

A negative electrode material for a lithium-ion secondary battery, in which the negative electrode material includes a composite particle including a spherical graphite particle and plural graphite particles that have a compressed shape and that aggregate or are combined so as to have nonparallel orientation planes, and the negative electrode material has an R-value in a Raman measurement of from 0.03 to 0.10, and has a pore volume as obtained by mercury porosimetry of from 0.2 mL/g to 1.0 mL/g in a pore diameter range of from 0.1 μm to 8 μm.

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Tsuchiya, Hideyuki. (2020). Negative electrode material for lithium-ion secondary battery, method for manufacturing negative electrode material for lithium-ion secondary battery, negative electrode material slurry for lithium-ion secondary battery, negative electrode for lithium-ion secondary battery, and lithium-ion secondary battery (U.S. Patent No. 10601044). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10601044

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