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Article Dans Une Revue Progress in Solid State Chemistry Année : 2023

Rationalizing the alkali ions distribution along the honeycomb layered (Li,Na)2SnO3 pseudo solid solution

Résumé

Alkali-rich layered oxides Li2SnO3 and Na2SnO3 are isostructural, but no alkali-mixed compositions have been reported so far. While the thermodynamic stability of such mixed compositions is predicted by DFT calculations mainly for the sodium-rich side, single-phase compounds Li2-xNaxSnO3 were successfully obtained in the whole composition range (0 ≤ x ≤ 2) by conventional solid-state synthesis thanks to a quenching procedure at the end of the heat treatment. From Li2SnO3 to Na2SnO2, the evolution of the cell parameters and the DFT calculations demonstrate that the lithium-to-sodium substitution occurs firstly inside the alkali layer up to Li0.5Na1.5SnO3 and then in the honeycomb layer.
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Dates et versions

hal-04118837 , version 1 (06-06-2023)

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Romain Berthelot, Carla Crobu, Eunice Mumba Mpanga, Bernard Fraisse, Marie-Liesse Doublet. Rationalizing the alkali ions distribution along the honeycomb layered (Li,Na)2SnO3 pseudo solid solution. Progress in Solid State Chemistry, 2023, 70, pp.100403. ⟨10.1016/j.progsolidstchem.2023.100403⟩. ⟨hal-04118837⟩
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