Method for preparing graphene-based LiFePO4/C composite material
US9672951B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2013 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Jul 20, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a method for preparing a graphene-based LiFePO4/C composite material, to solve the problem of poor conductivity and rate performance of lithium iron phosphate cathode material. The main features of the present invention include the steps of: 1) preparing an iron salt solution having graphene oxide dispersed therein; 2) preparing a ferric phosphate/graphene oxide precursor; 3) preparing the graphene-based LiFePO4/C composite material. The beneficial effects of the method is that the process is simple, easy to control and the resulted graphene-based LiFePO4/C composite material has high specific capacity, good recycle performance and excellent rate capability is particularly suitable to the field of the power battery application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.