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Published online by Cambridge University Press: 28 February 2011
Layered compounds are known to be among the best host structures to practice lithium intercalation chemistry. Besides geometrical aspects which play an important role but are now quite well understood, this paper emphasizes the mechanism of the charge transfer upon intercalation. Electrochemical and optical spectroscopies associated to transport measurements are used for the investigations of the electronic modifications involved in the charge transfer in lithium intercalated compounds. A selection of appropriate materials is discussed. Optical spectroscopies such as photoluminescence, Raman scattering and far-infrared reflectivity show that free-carrier density and electron mobility change drastically. A good agreement is obtained with the data measurements carried out by transport experiments.