Abstract
This study focuses on the preparation of lithium diphosphate compound LiCeP2O7 via conventional solid-state reaction. Analysis using the Rietveld refinement of the X-ray diffraction pattern reveals that the sample adopts a monoclinic structure at room temperature. Surface morphology is further examined through SEM. Additionally, complex impedance and electrical modulus spectroscopy analyses indicate the presence of non-Debye-type relaxation behavior. The direct current (dc) conductivity exhibits Arrhenius behavior, with activation energies of 0.94 eV in region I and 1.21 eV in region II, indicating thermally activated lithium-ion conduction. The thermal behavior of the exponent parameter “s” suggests a transition in the conduction mechanism from large polaron tunneling to small polaron tunneling that occurs at 533 K. Electric modulus studies confirm that the ionic conduction relaxation process is thermally activated and exhibits a spread of relaxation time. Understanding the ionic conduction mechanism will facilitate the design of efficient ionic conductors for battery applications.
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Acknowledgements
The authors extend their appreciation to the Deanship of Scientific Research at Northern Border University, Arar, KSA for funding this research work through the project number “NBU-FFR-2024-2924-03”.
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• Mohamed Hamdi was responsible for conceiving the research idea, designing the study, and securing the funding. He conducted data collection, performed statistical analyses, and drafted the manuscript.
• Mohamed Abu Shuheil contributed to the study design and participated in data collection.
• Abderrazak Oueslati provided expert guidance in the study design and methodology.
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Hamdi, M., Shuheil, M.A. & Oueslati, A. Synthesis, morphological, and ionic conductivity of a lithium cerium diphosphate compound. Ionics (2024). https://doi.org/10.1007/s11581-024-05516-2
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DOI: https://doi.org/10.1007/s11581-024-05516-2