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Magnesium batteries: Towards a first use of graphite fluorides

par Giraudet, Jérôme ;Claves, Daniel;Guérin, Katia;Dubois, Marc;Houdayer, Axel;Masin, Francis ;Hamwi, André
Référence Journal of Power Sources, 173, 1, page (592-598)
Publication Publié, 2007

Article révisé par les pairs

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Résumé :

Graphite fluorides obtained by fluorination of graphite at room temperature and after a subsequent re-fluorination treatment were characterised by X-ray diffraction and 19F MAS NMR. Their electrochemical performances as cathode materials in magnesium batteries have been investigated. Four different electrolytes (0.5 or 1 M Mg(ClO4)2 in ACN, DMSO, PC and THF) were used for these tests. The specific energy and power densities were estimated for all media. A comparison of the performances between lithium and magnesium batteries was realised. The effect, on the electrochemical performances, of a re-fluorination treatment at 250 °C was also studied.