Synergic Effect of Metal and Fluorine Doping on the Structural and Electrical Properties of La5.4MoO11.1-Based Materials

Adrián López-Vergara; Marta Bergillos-Ruiz; Javier Zamudio-García; José M. Porras-Vázquez; Jesús Canales-Vazquez; David Marrero-López; Enrique R. Losilla

doi:10.1021/acs.inorgchem.9b03194

Synergic Effect of Metal and Fluorine Doping on the Structural and Electrical Properties of La_5.4MoO_11.1-Based Materials

Adrián López-Vergara, Marta Bergillos-Ruiz, Javier Zamudio-García, José M. Porras-Vázquez, Jesús Canales-Vazquez, David Marrero-López, Enrique R. Losilla

Research output: Contribution to journal › Article › peer-review

Abstract

Cationic and anionic frameworks of La_5.4MoO_11.1 proton conductors have been modified by means of metal (Ti⁴⁺, Zr⁴⁺, and Nb⁵⁺) and fluorine (F^-) doping. This synergic effect leads to the stabilization of high-symmetry and single-phase polymorphs. The materials have been fully characterized by structural techniques, such as X-ray and neutron powder diffraction and transmission electron microscopy. The fluorine content was determined by ion chromatography. Impedance spectroscopy analysis under different atmospheres (dry and wet N₂ and O₂ and wet 5% H₂-Ar) showed an improvement in the electronic conductivity under reducing conditions, making these materials potential candidates for hydrogen separation membranes.

Original language	English
Pages (from-to)	1444-1452
Number of pages	9
Journal	Inorganic Chemistry
Volume	59
Issue number	2
DOIs	https://doi.org/10.1021/acs.inorgchem.9b03194
Publication status	Published - 21 Jan 2020
Externally published	Yes

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title = "Synergic Effect of Metal and Fluorine Doping on the Structural and Electrical Properties of La5.4MoO11.1-Based Materials",

abstract = "Cationic and anionic frameworks of La5.4MoO11.1 proton conductors have been modified by means of metal (Ti4+, Zr4+, and Nb5+) and fluorine (F-) doping. This synergic effect leads to the stabilization of high-symmetry and single-phase polymorphs. The materials have been fully characterized by structural techniques, such as X-ray and neutron powder diffraction and transmission electron microscopy. The fluorine content was determined by ion chromatography. Impedance spectroscopy analysis under different atmospheres (dry and wet N2 and O2 and wet 5% H2-Ar) showed an improvement in the electronic conductivity under reducing conditions, making these materials potential candidates for hydrogen separation membranes.",

author = "Adri{\'a}n L{\'o}pez-Vergara and Marta Bergillos-Ruiz and Javier Zamudio-Garc{\'i}a and Porras-V{\'a}zquez, {Jos{\'e} M.} and Jes{\'u}s Canales-Vazquez and David Marrero-L{\'o}pez and Losilla, {Enrique R.}",

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doi = "10.1021/acs.inorgchem.9b03194",

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T1 - Synergic Effect of Metal and Fluorine Doping on the Structural and Electrical Properties of La5.4MoO11.1-Based Materials

AU - López-Vergara, Adrián

AU - Bergillos-Ruiz, Marta

AU - Zamudio-García, Javier

AU - Porras-Vázquez, José M.

AU - Canales-Vazquez, Jesús

AU - Marrero-López, David

AU - Losilla, Enrique R.

PY - 2020/1/21

Y1 - 2020/1/21

N2 - Cationic and anionic frameworks of La5.4MoO11.1 proton conductors have been modified by means of metal (Ti4+, Zr4+, and Nb5+) and fluorine (F-) doping. This synergic effect leads to the stabilization of high-symmetry and single-phase polymorphs. The materials have been fully characterized by structural techniques, such as X-ray and neutron powder diffraction and transmission electron microscopy. The fluorine content was determined by ion chromatography. Impedance spectroscopy analysis under different atmospheres (dry and wet N2 and O2 and wet 5% H2-Ar) showed an improvement in the electronic conductivity under reducing conditions, making these materials potential candidates for hydrogen separation membranes.

AB - Cationic and anionic frameworks of La5.4MoO11.1 proton conductors have been modified by means of metal (Ti4+, Zr4+, and Nb5+) and fluorine (F-) doping. This synergic effect leads to the stabilization of high-symmetry and single-phase polymorphs. The materials have been fully characterized by structural techniques, such as X-ray and neutron powder diffraction and transmission electron microscopy. The fluorine content was determined by ion chromatography. Impedance spectroscopy analysis under different atmospheres (dry and wet N2 and O2 and wet 5% H2-Ar) showed an improvement in the electronic conductivity under reducing conditions, making these materials potential candidates for hydrogen separation membranes.

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Synergic Effect of Metal and Fluorine Doping on the Structural and Electrical Properties of La_5.4MoO_11.1-Based Materials

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