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. 29, 2016
Filed:
Jan. 19, 2010
Hiroaki Masukuni, Yamaguchi-ken, JP;
Kazumichi Koga, Yamaguchi-ken, JP;
Masayuki Uegami, Yamaguchi-ken, JP;
Kazutoshi Matsumoto, Yamaguchi-ken, JP;
Hiroaki Masukuni, Yamaguchi-ken, JP;
Kazumichi Koga, Yamaguchi-ken, JP;
Masayuki Uegami, Yamaguchi-ken, JP;
Kazutoshi Matsumoto, Yamaguchi-ken, JP;
TODA KOGYO CORPORATION, Hiroshima, JP;
Abstract
The present invention relates to positive electrode active substance particles for lithium ion batteries, comprising lithium manganate particles comprising Li and Mn as main components and having a cubic spinel structure (Fd-3m), wherein primary particles of the positive electrode active substance have a dodecahedral or higher-polyhedral shape in which none of crystal planes equivalent to the (111) plane are located adjacent to each other, and flat crystal planes are crossed with each other to form a clear ridge, and an average primary particle diameter of the primary particles is not less than 1 μm and not more than 20 μm. The positive electrode active substance particles according to the present invention are excellent in packing property, load characteristics and high-temperature stability.