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Article Dans Une Revue Electrochemical and Solid-State Letters Année : 2004

Hybrid-Type Graphite Fluoride as Cathode Material in Primary Lithium Batteries

Résumé

A graphite fluoride (CF(LT)-T) series with singular physicochemical properties were prepared by a refluorination treatment between 100 and 600°C of a low-temperature (LT) fluorinated graphite. The most striking feature of these materials is the coexistence of sp2- and the sp3-type hybridizations of the carbon atoms, which gives the materials an unusual hybrid covalent/semicovalent character. This hybrid structure leads to outstanding electrochemical performances as cathode materials in primary lithium batteries. In particular a very high energy density of 2277 Wh kg–1 was achieved with the CF(LT)550 material. The discharge voltage and capacity are refluorination temperature dependent.

Domaines

Matériaux
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Dates et versions

hal-00417864 , version 1 (17-09-2009)

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Citer

Katia Guérin, Rachid Yazami, André Hamwi. Hybrid-Type Graphite Fluoride as Cathode Material in Primary Lithium Batteries. Electrochemical and Solid-State Letters, 2004, 7 (6), pp. A159-A162. ⟨10.1149/1.1718244⟩. ⟨hal-00417864⟩
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