GUILMARD, Marianne; ROUGIER, Aline; GRÜNE, M.; CROGUENNEC, Laurence; DELMAS, Claude

doi:10.1016/S0378-7753(03)00012-0

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GUILMARD, Marianne
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

ROUGIER, Aline
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

GRÜNE, M.
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Journal of Power Sources. 2003, vol. 115, n° 2, p. 305-314

Elsevier

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LiNi1−yAlyO2 (0.10≤y≤0.50) compounds have been synthesized by a coprecipitation method. The characterization of the samples by X-ray and neutron diffraction, associated with Rietveld refinement analysis, has shown that for all materials, about 5% extra-nickel ions are present in the interslab space. Charge−discharge cycling of LiNi1−yAlyO2 as positive electrode material in lithium cells has shown that aluminum substitution suppresses all the phase transitions observed for the LiNiO2 system. Good cycling stability was observed, but the capacity decreases from 125 to 100 mAh/g by increasing the aluminum amount from 10 to 25% (3–4.15 V range; C/20 rate).< Leer menos

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Intercalation

Lithium battery

LiNiO2

Aluminum substitution

Diffraction

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Effects of aluminum on the structural and electrochemical properties of LiNiO2

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