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:
Feb. 23, 2016
Filed:
Nov. 20, 2009
Toshikatsu Kojima, Ikeda, JP;
Tetsuo Sakai, Ikeda, JP;
Takuhiro Miyuki, Ikeda, JP;
Yasue Okuyama, Ikeda, JP;
Akira Kojima, Kariya, JP;
Junichi Niwa, Kariya, JP;
Hitotoshi Murase, Kariya, JP;
Toshikatsu Kojima, Ikeda, JP;
Tetsuo Sakai, Ikeda, JP;
Takuhiro Miyuki, Ikeda, JP;
Yasue Okuyama, Ikeda, JP;
Akira Kojima, Kariya, JP;
Junichi Niwa, Kariya, JP;
Hitotoshi Murase, Kariya, JP;
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, Tokyo, JP;
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Aichi, JP;
Abstract
The present invention is one which provides a production process for lithium-silicate-system compound, the production process being characterized in that: a lithium-silicate compound being expressed by LiSiOis reacted with a substance including at least one member of transition-metal elements that is selected from the group consisting of iron and manganese at 400-650° C. in a molten salt of a carbonate mixture comprising lithium carbonate and at least one member of alkali-metal carbonates that is selected from the group consisting of potassium carbonate, sodium carbonate, rubidium carbonate and cesium carbonate in a mixed-gas atmosphere including carbon dioxide and a reducing gas; and a positive-electrode active material for lithium-ion secondary battery that comprises a lithium-silicate-system compound being obtained by the aforesaid process.