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:
Oct. 01, 2002
Filed:
Oct. 13, 2000
Kyoko Honbo, Hitachinaka, JP;
Akihiro Gotoh, Hitachi, JP;
Masahiro Kasai, Mito, JP;
Yasushi Muranaka, Hitachinaka, JP;
Yoshiji Hotta, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A lithium secondary battery characterized by a high power capacity and a long service life has a negative electrode , a positive electrode and a non-aqueous electrolyte containing lithium salt. The lithium secondary battery is characterized by further comprising multiple oxide represented by a general formula Li Mn M Q O (where M denotes at least one element selected from among Ni, Fe, Co, Cu and Cr; Q denotes at least one element selected from among C, N, S, P, Si, F, Cl, I and Br; and x, a, b, c and d are within the range of 0≦x≦) 1.1, 0≦a≦0.5, 0.05≦b≦1.0, 0.000001≦c<0.05 and 0≦d≦0.1, respectively) as a positive electrode activator.