LimMOxFy shell formation on cathode ceramic particle for Li ion battery through onium metal oxide fluoride precursor
US11201321B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2018 |
| Grant date | Dec 14, 2021 |
| Priority date | — |
| Expiry date | Feb 16, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a process for coating onto a substrate, including preparing a precursor having a general formula Qm/nMOxFy by a reaction M(OH)x+yHF+m/nQ(OH)n→Qn+m/n(MOxFy)m−, wherein Q is an onium ion, selected from quaternary alkyl ammonium, quaternary alkyl phosphonium and trialkylsulfonium; M is a metal capable of forming an oxofluorometallate, where M may further comprise one or more additional metal, metalloid, and one or more of phosphorus (P), sulfur (S) and selenium (Se), iodine (I), and arsenic (As) or a combination thereof, and x>0, y>0, m≥1, n≥1; combining the precursor with a lithium ion source and with the substrate, and mixing to form a coating composition comprising a lithium oxofluorometallate having a general formula LimMOxFy on the substrate. Further disclosed is a core-shell electrode active material including a core capable of intercalating and deintercalating lithium coated with the lithium oxofluorometallate having the general formula LimMOxFy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.