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:
Jan. 05, 2021
Filed:
Jan. 18, 2016
Applicant:
Sanyo Electric Co., Ltd., Daito, JP;
Inventors:
Hiroshi Minami, Hyogo, JP;
Taizou Sunano, Tokushima, JP;
Assignee:
SANYO Electric Co., Ltd., Daito, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/583 (2010.01); H01M 4/38 (2006.01); H01M 4/62 (2006.01); H01M 4/134 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/583 (2013.01); H01M 4/134 (2013.01); H01M 4/386 (2013.01); H01M 4/62 (2013.01); H01M 4/625 (2013.01); H01M 2004/027 (2013.01);
Abstract
A non-aqueous electrolyte secondary battery that contains a silicon material as a negative-electrode active material has improved initial charge/discharge efficiency. A negative-electrode active material particle () according to an embodiment contains a base particle (), which includes a lithium silicate phase () represented by LiSiO{0<z<2} and silicon particles () dispersed in the lithium silicate phase (). The base particle () has a porosity of 25% or less, preferably 15% or less.