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Highly Conducting Li(Fe(1−x)Mn(x))(0.88)V(0.08)PO(4) Cathode Materials Nanocrystallized from the Glassy State (x = 0.25, 0.5, 0.75)

This study showed that thermal nanocrystallization of glassy analogs of LiFe [Formula: see text] Mn [Formula: see text] PO [Formula: see text] (with the addition of vanadium for improvement of glass forming properties) resulted in highly conducting materials that may be used as cathodes for Li-ion b...

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Autores principales: Frąckiewicz, Justyna E., Pietrzak, Tomasz K.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8585229/
https://www.ncbi.nlm.nih.gov/pubmed/34771963
http://dx.doi.org/10.3390/ma14216434
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author Frąckiewicz, Justyna E.
Pietrzak, Tomasz K.
author_facet Frąckiewicz, Justyna E.
Pietrzak, Tomasz K.
author_sort Frąckiewicz, Justyna E.
collection PubMed
description This study showed that thermal nanocrystallization of glassy analogs of LiFe [Formula: see text] Mn [Formula: see text] PO [Formula: see text] (with the addition of vanadium for improvement of glass forming properties) resulted in highly conducting materials that may be used as cathodes for Li-ion batteries. The glasses and nanomaterials were studied with differential thermal analysis, X-ray diffractometry, and impedance spectroscopy. The electrical conductivity of the nanocrystalline samples varied, depending on the composition. For [Formula: see text] , it exceeded [Formula: see text] S/cm at room temperature with an activation energy as low as 0.15 eV. The giant and irreversible increase in the conductivity was explained on the basis of Mott’s theory of electron hopping and a core-shell concept. Electrochemical performance of the active material with [Formula: see text] was also reported.
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spelling pubmed-85852292021-11-12 Highly Conducting Li(Fe(1−x)Mn(x))(0.88)V(0.08)PO(4) Cathode Materials Nanocrystallized from the Glassy State (x = 0.25, 0.5, 0.75) Frąckiewicz, Justyna E. Pietrzak, Tomasz K. Materials (Basel) Article This study showed that thermal nanocrystallization of glassy analogs of LiFe [Formula: see text] Mn [Formula: see text] PO [Formula: see text] (with the addition of vanadium for improvement of glass forming properties) resulted in highly conducting materials that may be used as cathodes for Li-ion batteries. The glasses and nanomaterials were studied with differential thermal analysis, X-ray diffractometry, and impedance spectroscopy. The electrical conductivity of the nanocrystalline samples varied, depending on the composition. For [Formula: see text] , it exceeded [Formula: see text] S/cm at room temperature with an activation energy as low as 0.15 eV. The giant and irreversible increase in the conductivity was explained on the basis of Mott’s theory of electron hopping and a core-shell concept. Electrochemical performance of the active material with [Formula: see text] was also reported. MDPI 2021-10-27 /pmc/articles/PMC8585229/ /pubmed/34771963 http://dx.doi.org/10.3390/ma14216434 Text en © 2021 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
Frąckiewicz, Justyna E.
Pietrzak, Tomasz K.
Highly Conducting Li(Fe(1−x)Mn(x))(0.88)V(0.08)PO(4) Cathode Materials Nanocrystallized from the Glassy State (x = 0.25, 0.5, 0.75)
title Highly Conducting Li(Fe(1−x)Mn(x))(0.88)V(0.08)PO(4) Cathode Materials Nanocrystallized from the Glassy State (x = 0.25, 0.5, 0.75)
title_full Highly Conducting Li(Fe(1−x)Mn(x))(0.88)V(0.08)PO(4) Cathode Materials Nanocrystallized from the Glassy State (x = 0.25, 0.5, 0.75)
title_fullStr Highly Conducting Li(Fe(1−x)Mn(x))(0.88)V(0.08)PO(4) Cathode Materials Nanocrystallized from the Glassy State (x = 0.25, 0.5, 0.75)
title_full_unstemmed Highly Conducting Li(Fe(1−x)Mn(x))(0.88)V(0.08)PO(4) Cathode Materials Nanocrystallized from the Glassy State (x = 0.25, 0.5, 0.75)
title_short Highly Conducting Li(Fe(1−x)Mn(x))(0.88)V(0.08)PO(4) Cathode Materials Nanocrystallized from the Glassy State (x = 0.25, 0.5, 0.75)
title_sort highly conducting li(fe(1−x)mn(x))(0.88)v(0.08)po(4) cathode materials nanocrystallized from the glassy state (x = 0.25, 0.5, 0.75)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8585229/
https://www.ncbi.nlm.nih.gov/pubmed/34771963
http://dx.doi.org/10.3390/ma14216434
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