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

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Synergic Effect of Metal and Fluorine Doping on the Structural and Electrical Properties of La5.4MoO11.1-Based Materials.
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2020-01-07 , DOI: 10.1021/acs.inorgchem.9b03194
Adrián López-Vergara ₁ , Marta Bergillos-Ruiz ₁ , Javier Zamudio-García ₁ , José M Porras-Vázquez ₁ , Jesús Canales-Vazquez ₂ , David Marrero-López ₃ , Enrique R Losilla ₁

Affiliation

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.

中文翻译：

金属和氟掺杂对基于La5.4MoO11.1的材料的结构和电性能的协同效应。

La5.4MoO11.1质子导体的阳离子和阴离子骨架已通过金属（Ti4 +，Zr4 +和Nb5 +）和氟（F-）掺杂改性。这种协同作用导致高对称和单相多晶型物的稳定。这些材料已通过结构技术（例如X射线和中子粉末衍射和透射电子显微镜）进行了充分表征。氟含量通过离子色谱法测定。在不同气氛（干燥和潮湿的N2和O2以及潮湿的5％H2-Ar）下进行的阻抗谱分析表明，在还原条件下，电子电导率有所提高，这使这些材料成为氢分离膜的潜在候选者。

更新日期：2020-01-08

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