Preparation method for long-cycle modified graphite-based composite material and lithium ion battery comprising the material
US12258274B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2019 |
| Grant date | Mar 25, 2025 |
| Priority date | — |
| Expiry date | Jul 27, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided are a preparation method of a long-cycle modified graphite-based composite material and a lithium ion battery containing the material. The method including: (1) mixing a graphite material and a coating modifier; (2) placing the mixture into a self-pressurized reaction device, then placing the device in a heating apparatus to perform a self-pressurized impregnation experiment, during which temperature is controlled to increase in such a manner that the coating modifier is gradually liquefied after reaching a softening point, to completely impregnate the graphite material under self-pressurizing and to be distributed on a surface of the graphite material; (3) cooling; and (4) performing a heat treatment in an inert atmosphere to obtain the modified graphite-based composite material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.