A new promising high temperature lithium battery solid electrolyte |
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Affiliation: | Electrochemical Energy Systems Division, CECRI, Karaikudi 630 006, India |
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Abstract: | Lithium lanthanoid silicates find importance as a solid electrolyte in high temperature lithium batteries in view of its high ionic conductivity at high temperatures. An first ever attempt is made to synthesis a new high temperature solid electrolyte viz., lithium samarium holmium silicate by sol–gel process and it has been characterized by thermal analysis (TGA–DTA), X-ray diffraction (XRD), infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). Lithium ion conductivity of 0.8087 × 10−7 Ω−1 cm−1 at 25 °C was obtained and it increases with increasing temperature. For the first time a highest conductivity of 0.1095 × 10−2 Ω−1 cm−1 was obtained at 850 °C which is high compared to other high temperature lithium battery solid electrolytes. |
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