Mechanochemical Synthesizing of Garnet-Type Structure Li₇La₃Ce₂O₁₂ and its Electrical Behaviour

Abstract:

In this work, the effect of mechanochemical synthesizing method on the properties of the Li₇La₃Ce₂O₁₂ was studied. The Li₇La₃Ce₂O₁₂ was prepared using planetary ball-mill method heated at 900 °C with intermittence grinding. The X-ray diffraction analysis shown that the sample exhibited tetragonal structure at room temperature with space group I4/mmm. An incomplete single semicircle arc was observed in the complex impedance shows that the sample was contributed by bulk effect and need a much higher frequency to measure the impedance response. The conductivity of the samples exhibits temperature dependence at lower temperature and frequency dependence at much higher temperature which associated to the ionic conductor behavior. Two slopes were observed from the activation energy plot indicates that more likely electron and ionic transport within the sample.

• Periodical: Advances in Science and Technology (Volume 118)
• Pages: 3-8
• DOI: https://doi.org/10.4028/p-n73n04
• Online since: September 2022
• Authors: Nazerah Yaacob*, Mohd Sobri Idris, Rozana Aina Maulat Osman, Mogalahalli Venkatesh Reddy, Ku Noor Dhaniah Ku Muhsen, Nor Zachy Fernandez
• Keywords: Ceramic, Garnet-Type Structure, Lithium-Ion Batteries, Solid Electrolytes

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