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 belo
Electrochemical behavior of graphite intercalated by fluorine
โ Scribed by N. Watanabe; T. Nakajima; R. Hagiwara
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 208 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0378-7753
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โฆ Synopsis
The discharge potentials of graphite fluorides, (CF), and (C,F),, were almost the same at low current densities, but (CzF)n gave a higher discharge potential, by 0.3 -0.4 V, than (CF), with increasing current density. The discharge of the electrodes made by mixing (CF), and (C,F), showed that (C,F), was preferentially discharged, followed by the discharge of (CF), . The dependence of their overpotentials on the structures is discussed on the basis of the X-ray diffraction and ESR measurements.
๐ SIMILAR VOLUMES
Samples of stage-2 fluorine graphite intercalation compounds (GIC) were studied by scanning tunneling microscope (STM) from submicrometer to atomic scale. From the STM view point, the most striking observation concerns the topographic modifications of the \((a, b)\) sample surface induced by the int
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