A graphite intercalation compound of C,F(MgF& was prepared under a fluorine atmosphere of 1 atm at temperatures of 20-350ยฐC. The 1st stage compound has the identity period of 9.3-9.4& ESCA and @F NMR spectra indicate that the chemical interaction of intercalated fluorine with carbon is similar to th
Electrochemical behavior of graphite intercalation compounds of fluorine and metal fluorides
โ Scribed by T. Nakajima; M. Kawaguchi; N. Watanabe
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 408 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0013-4686
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โฆ Synopsis
Ternaryintercalationcompounds,C,F(AlF,),andC,F(MgF,),containingactivefluorineatoms adsorbed on carbon Iavers of host tzraohite were used as a cathode material of lithium cell. The discharge potentials are 2.8-2.5 v at current densities 40400 PA cm-', being higher than that for graphite fluoride below 300 PA cm-z_ X-ray diffraction analysis and ESCA measurement of the discharge products indicate the formation of a new intercalation compound C,(LiF) (MF,),.,
๐ SIMILAR VOLUMES
Fluorine-graphite intercalation compounds have been prepared from HOPG and natural graphite powder in the presence of a fluoride such as AgF, WF,, or SbF, at room temperature. The C,F samples obtained were quasi stage 1, 2, and 3 compounds with compositions of Cz ,F-CU hF. The stage 1 hases in the a
The fluorination of highly oriented pyrolytic graphite (HOPG), powdery and flaky natural graphites, and carbon fiber (P 100) has been performed in a fluorine atmosphere with HF gas (5.3 x 103-4.8 x lo4 Pa), or by flowing fluorine gas in anhydrous liquid hydrogen fluoride (AHF) at ambient temperature