NASICON-type Li<sub>1.5</sub>Al<sub>0.5</sub>Ge<sub>1.5</sub>(PO<sub>4</sub>)<sub>3</sub> Containing Amorphous Phase for Solid Li-Ion Conductor (Supporting Information)
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posted on 2023-09-21, 05:37 authored by Yoichiro KAWANO, Akihiko KATO, Hiroyuki USUI, Yasuhiro DOMI, Hiroki SAKAGUCHI<p>Amorphous Li<sub>1.5</sub>Al<sub>0.5</sub>Ge<sub>1.5</sub>(PO<sub>4</sub>)<sub>3</sub> (LAGP), which is an oxide-based solid electrolyte with a NASICON-type structure, was sintered at various temperatures to investigate its ionic conductivity and potential windows. The LAGP sheet sintered at 600 °C exhibited a slightly diminished ionic conductivity in comparison to that sintered at 800 °C; however, it effectively suppressed the current density value for oxidative decomposition around 5 V vs. Li<sup>+</sup>/Li. The crystal structure of the sintered LAGP sheets was confirmed using X-ray diffraction (XRD) and Raman spectroscopy. The results showed that the LAGP sheet sintered at 600 °C contained both crystalline and amorphous phases of LAGP. It was considered that the oxidation resistance of the solid electrolyte was improved by sintering at 600 °C owing to the mixture of crystalline and amorphous phases of LAGP.</p>
Funding
Japan Society for the Promotion of Science
In-depth understanding of the silicon lithiation process for next-generation lithium secondary batteries
Japan Society for the Promotion of Science
Find out more...Creation of next-generation lithium-ion batteries using silicon
Japan Society for the Promotion of Science
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