Surface structure and electrochemical characteristics of graphite fluorinated by elemental fluorine and plasma treatment using CF4.
Langue
en
Article de revue
Ce document a été publié dans
Molecular Crystals and Liquid Crystals. 2002, vol. 388, p. 517-522
Taylor & Francis
Résumé en anglais
Surface modification of graphite powder has been performed by elemental fluorine and radiofrequency plasma fluorination. Both of the methods enlarge the surface areas of graphite samples and change their pore volume ...Lire la suite >
Surface modification of graphite powder has been performed by elemental fluorine and radiofrequency plasma fluorination. Both of the methods enlarge the surface areas of graphite samples and change their pore volume distribution. Surface-fluorinated graphite samples demonstrate the capacities higher than those of original samples and even the theoretical capacity of graphite, 372 mAhg-1 without reducing the first coulombic efficiencies. The increments of the capacities are sim5, sim10 and sim15% for graphite samples with average particle diameters of 7, 25 and 40 mum, respectively.< Réduire
Mots clés en anglais
Electrode capacity
Electrochemical properties
Surface structure
Fluorination
Graphite
Electrode material
Lithium batteries
Secondary cell
Origine
Importé de halUnités de recherche