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Electrochemistry
Online ISSN : 2186-2451
Print ISSN : 1344-3542
ISSN-L : 1344-3542
Articles
NASICON-type Li1.5Al0.5Ge1.5(PO4)3 Containing Amorphous Phase for Solid Li-Ion Conductor
Yoichiro KAWANO, Akihiko KATO, Hiroyuki USUI , Yasuhiro DOMI, Hiroki SAKAGUCHI
著者情報
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Yoichiro KAWANO
Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University Center for Research on Green Sustainable Chemistry, Tottori University FDK corporation
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Akihiko KATO
FDK corporation
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Hiroyuki USUI
責任著者
https://orcid.org/0000-0002-1156-0340
Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University Center for Research on Green Sustainable Chemistry, Tottori University
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Yasuhiro DOMI
https://orcid.org/0000-0003-3983-2202
Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University Center for Research on Green Sustainable Chemistry, Tottori University
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Hiroki SAKAGUCHI
責任著者
https://orcid.org/0000-0002-4125-7182
Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University Center for Research on Green Sustainable Chemistry, Tottori University
責任著者(Corresponding author)
キーワード: NASICON,
Electrochemical Stability,
Cyclic Voltammogram,
Raman Spectroscopy
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2023 年 91 巻
9 号
p. 097004
DOI
https://doi.org/10.5796/electrochemistry.23-00088
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抄録
Amorphous Li1.5Al0.5Ge1.5(PO4)3 (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+/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.
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© The Author(s) 2023. Published by ECSJ.
This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse of the work in any medium provided the original work is properly cited. [DOI: 10.5796/electrochemistry.23-00088].
http://creativecommons.org/licenses/by/4.0/
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