New graphite fluorides as electrode materials in lithium batteries

✍ Scribed by A. Hamwi; M. Daoud; J.C. Cousseins; R. Yazami

• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 443 KB
• Volume: 27
• Category: Article
• ISSN: 0378-7753
• DOI: 10.1016/0378-7753(89)80107-7

✦ Synopsis

Graphite fluorination use of a volatile fluoride at room temperature can be achieved with the such as BFs, BrF,, ClF, and IF, in a Fz + HF atmosphere. The compounds obtained by this new method have a ternary composition and a layered structure in which the carbon hexagons remain planar and the C-F bonds are slightly ionic. This enhances their properties as cathode materials in lithium batteries utilizing liquid or solid polymer electrolytes. Energy densities higher than 2 kW h kg-' have been achieved in both these media particularly with IF, derived compounds.