WEILL, François; TRAN, Nicolas; CROGUENNEC, Laurence; DELMAS, Claude

doi:10.1016/j.jpowsour.2007.05.090

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WEILL, François
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Centre de Ressources en Microscopie Electronique et Microanalyse

TRAN, Nicolas
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

CROGUENNEC, Laurence
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Journal of Power Sources. 2007, vol. 172, n° 2, p. 893-900

Elsevier

Resumen en inglés

The layered Li1+x(Ni0.425Mn0.425Co0.15)1 − xO2 (x = 0 and 0.12) materials were prepared by a coprecipitation method. Their structure was investigated using the combination of X-ray and electron diffraction experiments. For both materials (x = 0 and 0.12), the electron diffraction patterns revealed an in-plane √3ahex. × √3ahex. superstructure in agreement with the ordering of the Li+, Ni2+, Ni3+, Mn4+ and Co3+ ions in the transition metal layers. The stoichiometry of these materials was not in agreement with an ideal ordering: the possible presence of point defects or of a domain microstructure was thus discussed...< Leer menos

Palabras clave en inglés

Layered oxides

Overlithiation

Cation mixing

X-ray diffraction

Electron diffraction

Lithium-ion battery

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Cation ordering in the layered Li1+x(Ni0.425Mn0.425Co0.15)1−xO2 materials (x = 0 and 0.12)

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Resumen en inglés

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Centros de investigación