Bivalent metal doping for sodium manganese oxide as cathode materials for sodium ion batteries
US10454108B2 · kind B2 · utility
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Key dates
| Filing date | May 20, 2016 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | Jun 12, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A sodium transition metal based cathode material for a rechargeable sodium battery, having a P2 orthorhombic layered bronze crystal structure with space group Cmcm, and having a composition NaxMyMn1-yLiy′AzO2 with 0.60<x<0.95, wherein M consists of either one or more elements of the group consisting of Cu, Zn and Ni; A consisting of either one or more elements of the group consisting of Mg, Ti, Fe, Cr and Co, with 0<y<0.20, 0≤z<0.2, 0≤y′<0.33, and z+y′>0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.