Method for producing positive electrode active material for lithium ion batteries and positive electrode active material for lithium ion batteries
US9221693B2 · kind B2 · utility
3Cited by
20References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2011 |
| Grant date | Dec 29, 2015 |
| Priority date | — |
| Expiry date | May 8, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method for producing a high quality positive electrode active material for lithium ion batteries at low cost and at excellent production efficiency. The method for producing a positive electrode active material for lithium ion batteries includes a step of firing a powder of lithium-containing carbonate that is a precursor for positive electrode active material for lithium ion batteries in a rotary kiln. In the step, a temperature at a powder feed part inside of the rotary kiln is kept at 500° C. or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.