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:
May. 21, 2002
Filed:
Feb. 18, 2000
Hiroshi Nakajima, Hirakata, JP;
Taeko Ota, Osaka, JP;
Hiroshi Watanabe, Sumoto, JP;
Shin Fujitani, Hirakata, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
In a lithium secondary battery of this invention, either a positive electrode or a negative electrode includes, as an active material, an orthorhombic composite oxide represented by a composition formula, M Mo O , wherein M is at least one transition element selected from the group consisting of Cu, V, Mn, Fe, Co and Ni; 0<x≦0.46; and 2.6≦y≦3.1, or a composition formula, M Nb O , wherein M is at least one transition element selected from the group consisting of V, Cr, Mo, W. Mn and Fe; 0<x≦0.6; and 4.7≦y≦5.3, or an orthorhombic lithium-containing composite oxide obtained by incorporating lithium into the orthorhombic composite oxide. Thus, the lithium secondary battery can exhibit better charge-discharge cycle performance than a lithium secondary battery using MoO or Nb O as an active material.