TRAD, Khiem; CARLIER-LARREGARAY, Dany; WATTIAUX, Alain; BEN AMARA, Mongi; DELMAS, Claude

doi:10.1149/1.3442365

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TRAD, Khiem
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Matériaux Inorganiques

CARLIER-LARREGARAY, Dany
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

WATTIAUX, Alain
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Journal of The Electrochemical Society. 2010, vol. 157, n° 8, p. A947-A952

Electrochemical Society

Résumé en anglais

The layered Na3Fe3(PO4)4 phase prepared by solid-state reaction was studied as positive electrode in lithium batteries. Up to 1.9 Li+ ions/f.u. could be intercalated, and only 1.7 Li+ ions could be extracted between 4.5 and 2 V vs Li+/Li with an average voltage of around ~2.8 V. In situ and ex situ X-ray diffraction data and Mössbauer spectroscopy measurements indicate that the intercalation/deintercalation process occurs through a solid solution process and is reversible. To improve its electrochemical performances, Na3Fe3(PO4)4 was also prepared via a hydrothermal method that leads to a significant particle size reduction. However, no clear improvements of the cycling performances were observed using this material as positive electrode in sodium and lithium batteries.< Réduire

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Electrodes

Intercalation compounds

Mossbauer spectroscopy

Secondary cells

Sodium compounds

Solid solutions

X-ray diffraction

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Study of layered iron(III) phosphate phase Na3Fe3(PO4)4 used a positive electrode in lithium batteries

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