Electrical Conductivity and Mechanical Properties of Li7 – 3хAlхLa3Zr2O12 Solid Electrolyte

— We have studied the electrical conductivity and mechanical characteristics of a Li 7 – 3 х Al х La 3 Zr 2 O 12 solid electrolyte with the garnet structure. Its ionic conductivity has been determined using electrochemical impedance spectroscopy in the frequency range 10 Hz to 2 MHz, and its electro...

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Bibliographic Details
Published in:Inorganic materials 2022, Vol.58 (2), p.147-153
Main Authors: Kunshina, G. B., Bocharova, I. V., Shcherbina, O. B.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Elastic properties
Electric contacts
Electrical resistivity
Electrochemical impedance spectroscopy
Electrolytes
Frequency ranges
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Ion currents
Lithium
Materials Science
Mechanical properties
Microhardness
Modulus of elasticity
Nanohardness
Solid electrolytes
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Summary:— We have studied the electrical conductivity and mechanical characteristics of a Li 7 – 3 х Al х La 3 Zr 2 O 12 solid electrolyte with the garnet structure. Its ionic conductivity has been determined using electrochemical impedance spectroscopy in the frequency range 10 Hz to 2 MHz, and its electronic conductivity has been evaluated using potentiostatic chronoammetry. The total ionic conductivity of Li 7 – 3 х Al х La 3 Zr 2 O 12 is 1.8 × 10 –4 S/cm, and its electronic conductivity does not exceed 2.7 × 10 –9 S/cm. The elastic and mechanical properties of Li 7 – 3 х Al х La 3 Zr 2 O 12 ceramics have been studied by a contact method using a Nanoskan probe microscope/nanohardness tester. We present microhardness data obtained by comparative scratch testing and Young’s modulus evaluated from cantilever approach curves.
ISSN:0020-1685
1608-3172
DOI:10.1134/S0020168522020091