Multifold pressure-induced increase of electric conductivity in LiFe0.75V0.10PO4 glass

Piotr Baranowski , S. Starzonek , Aleksandra Drozd-Rzoska , S. J. Rzoska , Michał Bockowski , Pawel Keblinski , Tomasz Pietrzak , Jerzy Garbarczyk

Abstract

We investigated the impact of high pressure and high-temperature annealing on lithium-vanadium-iron-phosphate (LiFe0.75V0.10PO4) glass materials, proposed for the use in cathodes for high-performance batteries. The treatment was carried out below the glass transition temperature (Tg ≈ 483 °C) at P = 1 GPa pressure, in an argon atmosphere. It led to the multifold electrical conductivity increase. Broadband dielectric spectroscopy (BDS) measurements before and after the process revealed the strong DC-conductivity increase across the whole studied frequency range by two orders of magnitude. The phenomenon is explained using Mott’s theory of polaron hopping in disordered solids containing transition metal oxides. The pressure evolution of the glass transition temperature and the crystallisation temperature above Tg is shown.
Author Piotr Baranowski (WUT)
Piotr Baranowski,,
- Warsaw University of Technology
, S. Starzonek - [High Pressure Research Center of the Polish Academy of Sciences]
S. Starzonek,,
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, Aleksandra Drozd-Rzoska - [High Pressure Research Center of the Polish Academy of Sciences]
Aleksandra Drozd-Rzoska,,
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, S. J. Rzoska - [High Pressure Research Center of the Polish Academy of Sciences]
S. J. Rzoska,,
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, Michał Bockowski - [High Pressure Research Center of the Polish Academy of Sciences]
Michał Bockowski,,
-
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, Pawel Keblinski - [High Pressure Research Center of the Polish Academy of Sciences]
Pawel Keblinski,,
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, Tomasz Pietrzak (FP / SSID)
Tomasz Pietrzak,,
- Solid State Ionics Division
, Jerzy Garbarczyk (FP / SSID)
Jerzy Garbarczyk,,
- Solid State Ionics Division
Journal seriesScientific Reports, ISSN 2045-2322, (N/A 100 pkt)
Issue year2019
Vol9
No1
Publication size in sheets830.35
Article number16607
ASJC Classification1000 Multidisciplinary
DOIDOI:10.1038/s41598-019-53232-z
Languageen angielski
Score (nominal)100
Score sourcejournalList
ScoreMinisterial score = 100.0, 19-12-2019, ArticleFromJournal
Publication indicators Scopus Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 1.401; WoS Impact Factor: 2018 = 4.011 (2) - 2018=4.525 (5)
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