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Microwave Crystallization of Lithium Aluminum Germanium Phosphate Solid-State Electrolyte
Lithium aluminum germanium phosphate (LAGP) glass-ceramics are considered as promising solid-state electrolytes for Li-ion batteries. LAGP glass was prepared via the regular conventional melt-quenching method. Thermal, chemical analyses and X-ray diffraction (XRD) were performed to characterize the...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5456905/ https://www.ncbi.nlm.nih.gov/pubmed/28773627 http://dx.doi.org/10.3390/ma9070506 |
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author | Mahmoud, Morsi M. Cui, Yuantao Rohde, Magnus Ziebert, Carlos Link, Guido Seifert, Hans Juergen |
author_facet | Mahmoud, Morsi M. Cui, Yuantao Rohde, Magnus Ziebert, Carlos Link, Guido Seifert, Hans Juergen |
author_sort | Mahmoud, Morsi M. |
collection | PubMed |
description | Lithium aluminum germanium phosphate (LAGP) glass-ceramics are considered as promising solid-state electrolytes for Li-ion batteries. LAGP glass was prepared via the regular conventional melt-quenching method. Thermal, chemical analyses and X-ray diffraction (XRD) were performed to characterize the prepared glass. The crystallization of the prepared LAGP glass was done using conventional heating and high frequency microwave (MW) processing. Thirty GHz microwave (MW) processing setup were used to convert the prepared LAGP glass into glass-ceramics and compared with the conventionally crystallized LAGP glass-ceramics that were heat-treated in an electric conventional furnace. The ionic conductivities of the LAGP samples obtained from the two different routes were measured using impedance spectroscopy. These samples were also characterized using XRD and scanning electron microscopy (SEM). Microwave processing was successfully used to crystallize LAGP glass into glass-ceramic without the aid of susceptors. The MW treated sample showed higher total, grains and grain boundary ionic conductivities values, lower activation energy and relatively larger-grained microstructure with less porosity compared to the corresponding conventionally treated sample at the same optimized heat-treatment conditions. The enhanced total, grains and grain boundary ionic conductivities values along with the reduced activation energy that were observed in the MW treated sample was considered as an experimental evidence for the existence of the microwave effect in LAGP crystallization process. MW processing is a promising candidate technology for the production of solid-state electrolytes for Li-ion battery. |
format | Online Article Text |
id | pubmed-5456905 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-54569052017-07-28 Microwave Crystallization of Lithium Aluminum Germanium Phosphate Solid-State Electrolyte Mahmoud, Morsi M. Cui, Yuantao Rohde, Magnus Ziebert, Carlos Link, Guido Seifert, Hans Juergen Materials (Basel) Article Lithium aluminum germanium phosphate (LAGP) glass-ceramics are considered as promising solid-state electrolytes for Li-ion batteries. LAGP glass was prepared via the regular conventional melt-quenching method. Thermal, chemical analyses and X-ray diffraction (XRD) were performed to characterize the prepared glass. The crystallization of the prepared LAGP glass was done using conventional heating and high frequency microwave (MW) processing. Thirty GHz microwave (MW) processing setup were used to convert the prepared LAGP glass into glass-ceramics and compared with the conventionally crystallized LAGP glass-ceramics that were heat-treated in an electric conventional furnace. The ionic conductivities of the LAGP samples obtained from the two different routes were measured using impedance spectroscopy. These samples were also characterized using XRD and scanning electron microscopy (SEM). Microwave processing was successfully used to crystallize LAGP glass into glass-ceramic without the aid of susceptors. The MW treated sample showed higher total, grains and grain boundary ionic conductivities values, lower activation energy and relatively larger-grained microstructure with less porosity compared to the corresponding conventionally treated sample at the same optimized heat-treatment conditions. The enhanced total, grains and grain boundary ionic conductivities values along with the reduced activation energy that were observed in the MW treated sample was considered as an experimental evidence for the existence of the microwave effect in LAGP crystallization process. MW processing is a promising candidate technology for the production of solid-state electrolytes for Li-ion battery. MDPI 2016-06-23 /pmc/articles/PMC5456905/ /pubmed/28773627 http://dx.doi.org/10.3390/ma9070506 Text en © 2016 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Mahmoud, Morsi M. Cui, Yuantao Rohde, Magnus Ziebert, Carlos Link, Guido Seifert, Hans Juergen Microwave Crystallization of Lithium Aluminum Germanium Phosphate Solid-State Electrolyte |
title | Microwave Crystallization of Lithium Aluminum Germanium Phosphate Solid-State Electrolyte |
title_full | Microwave Crystallization of Lithium Aluminum Germanium Phosphate Solid-State Electrolyte |
title_fullStr | Microwave Crystallization of Lithium Aluminum Germanium Phosphate Solid-State Electrolyte |
title_full_unstemmed | Microwave Crystallization of Lithium Aluminum Germanium Phosphate Solid-State Electrolyte |
title_short | Microwave Crystallization of Lithium Aluminum Germanium Phosphate Solid-State Electrolyte |
title_sort | microwave crystallization of lithium aluminum germanium phosphate solid-state electrolyte |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5456905/ https://www.ncbi.nlm.nih.gov/pubmed/28773627 http://dx.doi.org/10.3390/ma9070506 |
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