A new ordered triple Hollandite: Ba{sub 1.33}Sb{sub 2.66}Al{sub 5.33}O{sub 16}

Journal Article · Thu Sep 15 00:00:00 EDT 2011 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2011.07.010· OSTI ID:21580239

Letrouit, A ^[1]; Boudin, S ^[1]; Barrier, N; Retoux, R ^[1]

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1. Laboratoire CRISMAT UMR6508, ENSICAEN, Universite de Caen-Basse Normandie, 6 Bd Marechal Juin, 14050 Caen Cedex (France)

Ba{sub 1.33}Sb{sub 2.66}Al{sub 5.33}O{sub 16} is a triple Hollandite, which crystallizes in a tetragonal cell (I4/m no. 87) with a=b=9.86090(5) A and c=8.77612(6) A. Its crystal structure was characterized using electron diffraction and X-ray powder diffraction; it is isotypic to K{sub 1.33}Mg{sub 3.11}Sb{sub 4.89}O{sub 16}, K{sub 1.76}Mg{sub 3.25}Sb{sub 4.75}O{sub 16} and to K{sub 1.8}Li{sub 2.45}Sb{sub 5.55}O{sub 16}. In the rutile chains of Ba{sub 1.33}Sb{sub 2.66}Al{sub 5.33}O{sub 16}, the ordering of Al and Sb atoms into unmixed sites induces the tripling of the c parameter compared to a 'single' Hollandite structure. The Ba{sup 2+} cations are dispersed along c, in the largest tunnels on non-split and fully occupied sites. They lie into Ba-Ba pairs separated by vacancies. Their regular arrangement has been confirmed by high resolution electron microscopy. Electrochemical experiments have also been performed in Li-ion cell but no Li insertion was detected. - Graphical Abstract: The new Ba{sub 1.33}Sb{sub 2.66}Al{sub 5.33}O{sub 16} triple Hollandite has been synthesized and characterized by X-ray diffraction, electron microscopy, and cyclic voltammetry. Highlights: > Synthesis of a new barium antimonium aluminium oxide with a Hollandite structure. > X-ray diffraction, electron microscopy and cyclic voltammetry studies. > Presence of cationic vacancies but no Li insertion activity.

• OSTI ID: 21580239
• Journal Information: Journal of Solid State Chemistry, Vol. 184, Issue 9; Other Information: DOI: 10.1016/j.jssc.2011.07.010; PII: S0022-4596(11)00379-3; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALUMINIUM OXIDES
BARIUM IONS
ELECTRON DIFFRACTION
ELECTRON MICROSCOPY
HOLLANDITE
LITHIUM IONS
RESOLUTION
RUTILE
SYNTHESIS
TETRAGONAL LATTICES
TUNNELS
VOLTAMETRY
X-RAY DIFFRACTION
ALUMINIUM COMPOUNDS
CHALCOGENIDES
CHARGED PARTICLES
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
IONS
MATERIALS
MICROSCOPY
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
RADIOACTIVE MATERIALS
RADIOACTIVE MINERALS
SCATTERING
UNDERGROUND FACILITIES