Study of the electrochemical properties in substituted Li2Ti3O7 ramsdellite |
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| Authors: | Michèle Van Thournout Manfred Womes Josette Olivier-Fourcade Jean-Claude Jumas |
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| Institution: | (1) Laboratoire des Agrégats Moléculaires et Matériaux Inorganiques (UMR 5072), Université Montpellier II, CC015, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France |
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| Abstract: | Substituting the ramsdellite compound Li2Ti3O7 has been considered in order to improve the structure stability and performances for its use as electrode material for Li-ion accumulators. Two substitutions have been carried out, Ti/Fe and (Ti, Li)/(Fe,Ni). The presence of 57Fe as a local Mössbauer probe is interesting for studying its local environment and the electrochemical mechanisms induced by lithium insertion. |
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| Keywords: | lithium insertion mechanism titanium oxides metal substitution 57Fe M?ssbauer spectroscopy |
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