Rechargeable battery with solid electrolyte
AssigneeCentre National de la Recherche Scientifique (CNRS)
InventorsAndre Hamwi, Rachid Yazami
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Abstract
The present invention relates to a rechargeable battery with solid electrolyte. The battery according to the invention comprises a solid polymer electrolyte, an anode composed of a lithium source and a cathode comprising a lithium-receiving material. The lithium-receiving material is a compound of the formula CF.sub.x M.sub.y, where M is chosen from I, Cl, Br, Re, W, Mo, B and 0.3.ltoreq.x.ltoreq.0.9, 0.02.ltoreq.y.ltoreq.0.06, and the structure of this material is such that the carbon atoms form planar hexagons. The battery according to the invention has improved capacity.
Claims7
Rechargeable battery comprising a polymer electrolyte, an anode composed of a lithium source and a cathode comprising a lithium-receiving material, characterized in that the lithium-receiving material is a compound of the formula CF.sub.x M.sub.y, where M is chosen from I, Cl, Br, Re, W, Mo, B and 0.3.ltoreq.x.ltoreq.0.9, 0.02.ltoreq.y.ltoreq.0.06, and the structure of this material is such that the carbon atoms form planar hexagons, said compound of the formula CF.sub.x M.sub.y being obtained at ambient temperature by reaction of graphite with gaseous fluorine F.sub.2 in the presence of an HF + MF.sub.n mixture as catalyst, representing the valence of the element M.
Dependencies are inferred from the claim text.