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:
Mar. 24, 2015
Filed:
Jun. 08, 2011
Hiroyasu Watanabe, Fukuoka-ken, JP;
Kazutoshi Ishizaki, Fukuoka-ken, JP;
Taiki Imahashi, Fukuoka-ken, JP;
Satoshi Nakamura, Fukuoka-ken, JP;
Osamu Sasaki, Fukuoka-ken, JP;
Hiroyasu Watanabe, Fukuoka-ken, JP;
Kazutoshi Ishizaki, Fukuoka-ken, JP;
Taiki Imahashi, Fukuoka-ken, JP;
Satoshi Nakamura, Fukuoka-ken, JP;
Osamu Sasaki, Fukuoka-ken, JP;
Toda Kogyo Corporation, Otake, JP;
Abstract
The present invention aims to provide lithium composite compound particles which can exhibit good cycle characteristics and an excellent high-temperature storage property when used as a positive electrode active substance of a secondary battery, and a secondary battery using the lithium composite compound particles. The present invention relates to lithium composite compound particles having a composition represented by the compositional formula: LiNiCoMnMO, in which the lithium composite compound particles have an ionic strength ratio A (LiO/NiO) of not more than 0.5 and an ionic strength ratio B (LiCO/Ni) of not more than 20 as measured on a surface of the respective lithium composite compound particles using a time-of-flight secondary ion mass spectrometer.