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Synthesis of Superionic Conductive Li(1+x+y)Al(x)Si(y)Ti(2−x)P(3−y)O(12) Solid Electrolytes

Commercial lithium-ion batteries using liquid electrolytes are still a safety hazard due to their poor chemical stability and other severe problems, such as electrolyte leakage and low thermal stability. To mitigate these critical issues, solid electrolytes are introduced. However, solid electrolyte...

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Autores principales: Jeong, Hyeonwoo, Na, Dan, Baek, Jiyeon, Kim, Sanggil, Mamidi, Suresh, Lee, Cheul-Ro, Seo, Hyung-Kee, Seo, Inseok
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9000703/
https://www.ncbi.nlm.nih.gov/pubmed/35407276
http://dx.doi.org/10.3390/nano12071158
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author Jeong, Hyeonwoo
Na, Dan
Baek, Jiyeon
Kim, Sanggil
Mamidi, Suresh
Lee, Cheul-Ro
Seo, Hyung-Kee
Seo, Inseok
author_facet Jeong, Hyeonwoo
Na, Dan
Baek, Jiyeon
Kim, Sanggil
Mamidi, Suresh
Lee, Cheul-Ro
Seo, Hyung-Kee
Seo, Inseok
author_sort Jeong, Hyeonwoo
collection PubMed
description Commercial lithium-ion batteries using liquid electrolytes are still a safety hazard due to their poor chemical stability and other severe problems, such as electrolyte leakage and low thermal stability. To mitigate these critical issues, solid electrolytes are introduced. However, solid electrolytes have low ionic conductivity and inferior power density. This study reports the optimization of the synthesis of sodium superionic conductor-type Li(1.5)Al(0.3)Si(0.2)Ti(1.7)P(2.8)O(12) (LASTP) solid electrolyte. The as-prepared powder was calcined at 650 °C, 700 °C, 750 °C, and 800 °C to optimize the synthesis conditions and yield high-quality LASTP powders. Later, LASTP was sintered at 950 °C, 1000 °C, 1050 °C, and 1100 °C to study the dependence of the relative density and ionic conductivity on the sintering temperature. Morphological changes were analyzed using field-emission scanning electron microscopy (FE-SEM), and structural changes were characterized using X-ray diffraction (XRD). Further, the ionic conductivity was measured using electrochemical impedance spectroscopy (EIS). Sintering at 1050 °C resulted in a high relative density and the highest ionic conductivity (9.455 × 10(−4) S cm(−1)). These findings corroborate with the activation energies that are calculated using the Arrhenius plot. Therefore, the as-synthesized superionic LASTP solid electrolytes can be used to design high-performance and safe all-solid-state batteries.
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spelling pubmed-90007032022-04-12 Synthesis of Superionic Conductive Li(1+x+y)Al(x)Si(y)Ti(2−x)P(3−y)O(12) Solid Electrolytes Jeong, Hyeonwoo Na, Dan Baek, Jiyeon Kim, Sanggil Mamidi, Suresh Lee, Cheul-Ro Seo, Hyung-Kee Seo, Inseok Nanomaterials (Basel) Article Commercial lithium-ion batteries using liquid electrolytes are still a safety hazard due to their poor chemical stability and other severe problems, such as electrolyte leakage and low thermal stability. To mitigate these critical issues, solid electrolytes are introduced. However, solid electrolytes have low ionic conductivity and inferior power density. This study reports the optimization of the synthesis of sodium superionic conductor-type Li(1.5)Al(0.3)Si(0.2)Ti(1.7)P(2.8)O(12) (LASTP) solid electrolyte. The as-prepared powder was calcined at 650 °C, 700 °C, 750 °C, and 800 °C to optimize the synthesis conditions and yield high-quality LASTP powders. Later, LASTP was sintered at 950 °C, 1000 °C, 1050 °C, and 1100 °C to study the dependence of the relative density and ionic conductivity on the sintering temperature. Morphological changes were analyzed using field-emission scanning electron microscopy (FE-SEM), and structural changes were characterized using X-ray diffraction (XRD). Further, the ionic conductivity was measured using electrochemical impedance spectroscopy (EIS). Sintering at 1050 °C resulted in a high relative density and the highest ionic conductivity (9.455 × 10(−4) S cm(−1)). These findings corroborate with the activation energies that are calculated using the Arrhenius plot. Therefore, the as-synthesized superionic LASTP solid electrolytes can be used to design high-performance and safe all-solid-state batteries. MDPI 2022-03-31 /pmc/articles/PMC9000703/ /pubmed/35407276 http://dx.doi.org/10.3390/nano12071158 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Jeong, Hyeonwoo
Na, Dan
Baek, Jiyeon
Kim, Sanggil
Mamidi, Suresh
Lee, Cheul-Ro
Seo, Hyung-Kee
Seo, Inseok
Synthesis of Superionic Conductive Li(1+x+y)Al(x)Si(y)Ti(2−x)P(3−y)O(12) Solid Electrolytes
title Synthesis of Superionic Conductive Li(1+x+y)Al(x)Si(y)Ti(2−x)P(3−y)O(12) Solid Electrolytes
title_full Synthesis of Superionic Conductive Li(1+x+y)Al(x)Si(y)Ti(2−x)P(3−y)O(12) Solid Electrolytes
title_fullStr Synthesis of Superionic Conductive Li(1+x+y)Al(x)Si(y)Ti(2−x)P(3−y)O(12) Solid Electrolytes
title_full_unstemmed Synthesis of Superionic Conductive Li(1+x+y)Al(x)Si(y)Ti(2−x)P(3−y)O(12) Solid Electrolytes
title_short Synthesis of Superionic Conductive Li(1+x+y)Al(x)Si(y)Ti(2−x)P(3−y)O(12) Solid Electrolytes
title_sort synthesis of superionic conductive li(1+x+y)al(x)si(y)ti(2−x)p(3−y)o(12) solid electrolytes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9000703/
https://www.ncbi.nlm.nih.gov/pubmed/35407276
http://dx.doi.org/10.3390/nano12071158
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