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Fluoride solid electrolytes

机译：氟化物固体电解质

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Relations between the structure and electrical properties of fluoride systems with different structures are presented. Physical properties of fluorite-structured (MF2-RF3, MF2-AF, MF2-M'F-2, M = Ba, Pb, R = La-Lu, Sc, Y, A = Li, Na, K, Rb, M' = Ba, Cd, Mg), orthorhombic (RF3, R = Tb-Er, Y), tysonite-structured (RF3-MF2, R = La-Nd, M = Sr), and monoclinic (BaR2F8, R = Ho-Yb, Y) fluoride single crystals or ceramics (ErF3, MF2-RF3, M = Ca, Ba, R = La, Gd, Tb, Y), glasses (ZBLAN, PIBAL) and eutectic composites (LiF-RF3, R = La-Gd, Y, PbF2-RF3, R = Ho, Yb, Y, Sc, PbF2-AF, A = Li, Na, PbF2-MgF2) are compared. Anisotropy of electrical properties is explained. Models of aggregation of defects into clusters are proposed. In fluoritestructured crystals, the highest ionic conductivity was found for PbF2: 7 mol % ScF3 (at 500 K, sigma(500) = 0.13 S/cm). In tysonite-structured crystals, the highest ionic conductivity was found for LaF 3: 3 mol % SrF2 (sigma(500) = 2.4 x 10(-2) S/cm). Different types of coordination polyhedrons and their different linking in orthorhombic and tysonite structures explain a large difference between conductivities in both structures.
机译：提出了具有不同结构的氟化物体系的结构与电性能之间的关系。萤石结构的物理性质（MF2-RF3，MF2-AF，MF2-M'F-2，M = Ba，Pb，R = La-Lu，Sc，Y，A = Li，Na，K，Rb，M '= Ba，Cd，Mg），斜方晶（RF3，R = Tb-Er，Y），钛铁矿结构（RF3-MF2，R = La-Nd，M = Sr）和单斜晶（BaR2F8，R = Ho- Yb，Y）氟化物单晶或陶瓷（ErF3，MF2-RF3，M = Ca，Ba，R = La，Gd，Tb，Y），玻璃（ZBLAN，PIBAL）和低共熔复合材料（LiF-RF3，R = La比较-Gd，Y，PbF2-RF3，R = Ho，Yb，Y，Sc，PbF2-AF，A = Li，Na，PbF2-MgF2）。说明了电特性的各向异性。提出了将缺陷聚集成簇的模型。在萤石结构的晶体中，发现PbF2的离子传导性最高：7 mol％ScF3（在500 K，sigma（500）= 0.13 S / cm）。在钛铁矿结构的晶体中，发现LaF 3的离子传导性最高：3 mol％SrF2（sigma（500）= 2.4 x 10（-2）S / cm）。不同类型的配位多面体及其在斜方晶体和透辉石结构中的不同连接解释了两种结构中电导率之间的巨大差异。

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