Polysulfone coating for high voltage lithium-ion cells
US9761862B2 · kind B2 · utility
0Cited by
26References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2013 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | Dec 1, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The performance of a lithium ion-cell where the cathode is a layered-layered lithium rich cathode material xLiMO2(1-x)Li2MNO3, M being a transition metal selected from the group consisting of Co, Ni, or Mn, is improved by coating the surface of the cathode with a sulfonyl-containing compound, such as poly(1,4-phenylene ether-ether-sulfone), inhibits the reactivity of the electrolyte with the oxidized electrode surface while allowing lithium ion conduction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.