LFP as initiator of in-battery polymerization of conducting polymers for high-rate-charging cathodes
US10593946B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2017 |
| Grant date | Mar 17, 2020 |
| Priority date | — |
| Expiry date | Feb 22, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Cathodes for a fast charging lithium ion battery, processes for manufacturing thereof and corresponding batteries are provided. Cathode formulations comprise spinel and/or layered structure cathode material with 5-10% of cathode material having an olivine-based structure as polymerization initiator, binder material, and monomer and/or oligomer material selected to polymerize into a conductive polymer upon partial delithiation of the olivine-based structure cathode material during at least a first charging cycle of a cell having a cathode made of the cathode formulation. When the cathode is used in a battery, polymerization is induced in-situ (in-cell) during first charging cycle(s) of the battery to provide a polymer matrix which is evenly dispersed throughout the cathode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.