Method for preparing cobalt-free layered cathode material by Li+/H+ exchange
US12412895B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2025 |
| Grant date | Sep 9, 2025 |
| Priority date | — |
| Expiry date | Feb 4, 2045 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a method for preparing a cobalt-free layered cathode material by Li+/H+ exchange, including adding a metal sulfate solution, a precipitant solution, and a complexing agent solution dropwise into an aqueous ammonia solution to obtain a mixed solution, and subjecting the mixed solution to precipitation complexation to obtain a hydroxide precursor; and mixing the hydroxide precursor with a lithium source to obtain a mixture, and subjecting the mixture to pre-sintering and crystallization in sequence to obtain the cobalt-free layered cathode material, a temperature for the pre-sintering being less than a temperature for the crystallization, where metal sulfates include at least two selected from the group consisting of non-cobalt transition metal sulfates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.