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:
Sep. 12, 2017
Filed:
Jun. 25, 2012
Hitohiko Ide, Saitama, JP;
Daisuke Inoue, Saitama, JP;
Shinya Kagei, Saitama, JP;
Natsumi Shibamura, Saitama, JP;
Yasunori Tabira, Saitama, JP;
Hitohiko Ide, Saitama, JP;
Daisuke Inoue, Saitama, JP;
Shinya Kagei, Saitama, JP;
Natsumi Shibamura, Saitama, JP;
Yasunori Tabira, Saitama, JP;
MITSUI MINING & SMELTING CO., LTD., Tokyo, JP;
Abstract
A negative electrode active material for nonaqueous secondary batteries is disclosed. The active material contains a silicon solid solution having one or more than one of a group 3 semimetal or metal element, a group 4 semimetal or metal element except silicon, and a group 5 nonmetal or semimetal element incorporated in silicon as a solute element. The solute element is present more on the crystal grain boundaries of the silicon solid solution than inside the grains.