Abstract: A purification method of carbon fluorides by removing non-bonding fluorine from carbon fluorides. The removing treatment is carried out by contacting gases with the non-bonding fluorine. Such gases are HCl, SO.sub.2, NO.sub.2, H.sub.2, steam and a mixed gas thereof.

Abstract: Organic electrolyte cells comprising a lithium anode and a fluorinated graphite cathode, and using a solution of lithium hexafluorophosphate (LiPF.sub.6) in an organic solvent as the electrolyte, whereby the discharge capacity is remarkably improved.

Abstract: An active material for batteries or cells having improved discharge characteristics and comprising a fluorinated graphite produced by fluorination of graphite with fluorine, the fluorinated graphite containing substantially no unreacted graphite and having a degree of fluorination such that the weight or fluorine content thereof is increased by a further fluorination under conditions equal to or severer than the fluorination conditions adopted to the production of the fluorinated graphite. The use of artificial graphite having a Franklin's P-value of at least 0.45 as a starting material is effective for further improving the discharge voltage and the capacity.

Abstract: Continuous fluorination of carbon is carried out by employing an apparatus for contact reaction of solid powder and reactive gas which comprises a horizontal reactor having a trough provided with weirs (e.g. height: 1 to 6 mm., interval: 5 to 30 cm.) and a vibrating means for vibrating the trough, and in which carbon particles supplied continuously are transported on the trough in a form of thin layer by the vibration of the trough while continuing the reaction by contacting efficiently the carbon particles with a fluorine gas. The contact reaction is efficiently conducted without accumulating the reaction heat to produce the fluorinated carbon in high yields, and the process is useful for the mass production. The apparatus is also useful for various contact reaction of a solid powder and a reactive gas.

Abstract: Continuous fluorination of carbon is carried out by employing an apparatus for contact reaction of solid powder and reactive gas which comprises a horizontal reactor having a trough provided with weirs (e.g. height: 1 to 6 mm., interval: 5 to 30 cm.) and a vibrating means for vibrating the trough, and in which carbon particles supplied continuously are transported on the trough in a form of thin layer by the vibration of the trough while continuing the reaction by contacting efficiently the carbon particles with a fluorine gas. The contact reaction is efficiently conducted without accumulating the reaction heat to produce the fluorinated carbon in high yields, and the process is useful for the mass production. The apparatus is also useful for various contact reaction of a solid powder and a reactive gas.