Lithium secondary battery with orthorhombic molybdenum and niobium oxide electrodes
US6391496B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2000 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Feb 18, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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, MxMo1−xOy, 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, MxNb2−xOy, 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 MoO3 or Nb2O5 as an active material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.