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.:
Date of Patent:
Nov. 06, 2018
Filed:
Mar. 24, 2015
Applicant:
Hitachi Chemical Company, Ltd., Tokyo, JP;
Inventors:
Assignee:
HITACHI CHEMICAL COMPANY, LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/14 (2006.01); H01M 4/587 (2010.01); C01B 31/04 (2006.01); 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 31/04 (2013.01); 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.