Effect of the reactive milling of graphite with boron nitride, tin and antimony on the lithium insertion

• Autorzy: Waszak D. , Frąckowiak E.
• Języki publikacji: EN

Abstrakty

EN

Boron-, tin- and antimony-based graphite composites were studied as the potential materials for negative electrodes in lithium-ion batteries. The materials were prepared by reactive milling the mixtures of graphite (90 wt%) with boron nitride (10 wt%), tin (10 wt%) or antimony (10 wt%). Milling was performed during 2h, 4h, 6h and 8h. The composites were characterized by X-ray diffraction and nitrogen adsorption at 77K (BET). A gradual development of surface area with milling was observed as well as an appearance of amorphous form. The galvanostatic characteristics of lithium insertion/deinsertion for these new composite materials were investigated. The graphite-tin composites exhibit the best reversible capacity. Modification by milling leads to a significant particle size reduction, good association of metallic phase with graphite crystal grains and, in consequence, to an increase of the reversible capacity. However, a significant enhancement of the irreversible capacity for the composites is also observed due to the development of specific surface area.

Słowa kluczowe

EN

lithium-ion cell; graphite; milling; anodic material

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2005
• Tom: Vol. 23, No. 3
• Strony: 813--820
• Opis fizyczny: Bibliogr. 16 poz., rys., tab.

Twórcy

autor

Waszak D.

autor

Frąckowiak E.

• Central Laboratory of Batteries and Cells, Forteczna 12, 61-362 Poznań,

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