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Article Dans Une Revue Journal of Carbon Research Année : 2023

High Energy Density Primary Lithium Battery with Fluorinated S-Doped Graphene

Résumé

Sulphur-doped graphene was fluorinated using molecular fluorine (F2). First, the fluorination conditions were adapted in order to be mild enough to maintain S in the carbon lattice and form S-F bonds. An unusually weakened C-F bonding for an F/C ratio of 0.71 was then achieved, which allowed enhanced performances when used as a cathode in primary lithium batteries. The material prepared at a moderate fluorination temperature of 70 °C for a period of 60 min exhibits a high mid-discharge reduction potential of 3.11 V at 10 mA/g and a power density of 3605 W/kg at a discharge rate of 2C. These electrochemical properties make the fluorine/sulfur co-doped graphene a promising material.
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Dates et versions

hal-04378792 , version 1 (08-01-2024)

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Marie Colin, Hani Farhat, Sam Chen, Elodie Petit, Emmanuel Flahaut, et al.. High Energy Density Primary Lithium Battery with Fluorinated S-Doped Graphene. Journal of Carbon Research, 2023, 10 (1), pp.3. ⟨10.3390/C10010003⟩. ⟨hal-04378792⟩
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