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This research aims to compare the ionic conductivity and crystal-chemical properties of various scandium-containing solid electrolyte solutions.

Ionic Conductivity in M1 − xScxF2 + x (M = Ca, Sr, Ba, or Pb) Fluorite Solid Solutions: A Comparative Analysis

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This research aims to compare the ionic conductivity and crystal-chemical properties of various scandium-containing solid electrolyte solutions.
Prepared M1 − xScxF2 + x fluorite solid solutions from melt via vertical directional crystallization or spontaneous crystallization.
Analyzed electrophysical characteristics such as ionic conductivity and ion transport activation enthalpy.
Evaluated crystal-chemical parameters including lattice parameters, ionic radii, and cation polarizability.
BaF2- and β-PbF2-based solutions showed ionic conductivities five to six orders of magnitude higher than CaF2 and SrF2 counterparts.
The ion transport activation enthalpy for BaF2 and β-PbF2 solutions was two to four times lower than for CaF2 and SrF2 solutions.
High ionic conductivity is linked to large ionic radii and high polarizability of Ba2+ and Pb2+ ions, enhancing fluoride ion mobility.

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Comparative analysis highlights ionic conductivity in scandium-containing solid electrolytes, suggesting improved designs for energy applications.

N. I. Sorokin (2025) studied this question.

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Comparative analysis highlights ionic conductivity in scandium-containing solid electrolytes, suggesting improved designs for energy applications.