What question did this study set out to answer?

The aim is to explore how substituting different multivalent cations affects the structure and ionic conductivity of LLTO perovskite solid electrolytes.

March 29, 2026Journal of Alloys and CompoundsOpen Access

Effect of multivalent cation substitution on structure and ionic conductivity of perovskite-type L0.3La0.57T0.99M0.01O3 (M = Ta, Zr, V) solid electrolyte for all-solid-state lithium batteries

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Authors

MMMaycol F. MenaTechnological University of Choco XYXinhao YangInstituto de Cerámica y Vidrio FVFerley Alejandro VásquezUniversidad de Antioquia

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Implication

Demonstrates improved ionic conductivity in perovskite solid electrolytes via multivalent B-site substitutions, highlighting the importance of dopant choice.

Key Points

The aim is to explore how substituting different multivalent cations affects the structure and ionic conductivity of LLTO perovskite solid electrolytes.
B-site substitutions (M = Ta⁵⁺, Zr⁴⁺, V⁵⁺) into LLTO perovskites
Preparation using sol-gel synthesis for optimal dopant incorporation
Characterization through X-ray diffraction and Raman spectroscopy
Evaluation of ionic conductivity via electrochemical impedance spectroscopy
Doping with Ta⁵⁺ and Zr⁴⁺ reduces grain-boundary resistance, enhancing ionic transport
V⁵⁺ doping increases grain-boundary resistance and reduces conductivity
Overall ionic conductivity reached 0.11 mS cm⁻¹ for Ta⁵⁺ and Zr⁴⁺ doped LLTO
Activation energies for bulk transport confirmed lower values for Ta (0.212 eV) and Zr (0.237 eV).

Cite This Study

Mena et al. (2026) studied this question.

synapsesocial.com/papers/69c8c324de0f0f753b39dc03 https://doi.org/10.1016/j.jallcom.2026.187638

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Implication

Demonstrates improved ionic conductivity in perovskite solid electrolytes via multivalent B-site substitutions, highlighting the importance of dopant choice.

Effect of multivalent cation substitution on structure and ionic conductivity of perovskite-type L0.3La0.57T0.99M0.01O3 (M = Ta, Zr, V) solid electrolyte for all-solid-state lithium batteries

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Key Points

Cite This Study

Effect of multivalent cation substitution on structure and ionic conductivity of perovskite-type L0.3La0.57T0.99M0.01O3 (M = Ta, Zr, V) solid electrolyte for all-solid-state lithium batteries

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Implication

Key Points

Cite This Study

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