Synthesis, thermal, structural and electrical properties of vanadium-doped lithium-manganese-borate glass and nanocomposites

Agata Jarocka , Przemysław Piotr Michalski , Jacek Ryl , Marek Wasiucionek , Jerzy Garbarczyk , Tomasz Pietrzak

Abstract

A glassy sample with a nominal formula LiMn1 − 3x/2VxBO3 (where x = 0.05) was synthesised using the melt-quenching method. Material was characterised by differential thermal analysis (DTA), X-ray diffactometry (XRD) at room temperature and as a function of temperature (HT-XRD), X-ray photoelectron spectroscopy (XPS), impedance spectroscopy (IS) and scanning electron microscopy (SEM). Dependences of glass transition and crystallisation temperatures on the heating rate in DTA experiments were determined. The initial value of electrical conductivity of the glass was 1.4 × 10− 15 Scm− 1. It was significantly increased by a proper thermal nanocrystallisation. The maximum value was higher by 6 orders of magnitude and reached 2.6 × 10− 9 Scm− 1 at room temperature. Expected crystalline phases (i.e. monoclinic and hexagonal LiMnBO3) upon heating were identified and assigned to thermal events observed with DTA. Microstructure of nanocrystalline samples observed by SEM revealed nanocrystalline grains noticeably smaller than 100 nm. Results explaining nanocrystallisation process are coherent.

Author Agata Jarocka (FP / SSID)
Agata Jarocka,,
- Solid State Ionics Division
, Przemysław Piotr Michalski (FP / SSID)
Przemysław Piotr Michalski,,
- Solid State Ionics Division
, Jacek Ryl - Gdańsk University of Technology (PG) [Gdańsk University of Technology (PG)]
Jacek Ryl,,
-
- Politechnika Gdańska
, Marek Wasiucionek (FP / SSID)
Marek Wasiucionek,,
- Solid State Ionics Division
, Jerzy Garbarczyk (FP / SSID)
Jerzy Garbarczyk,,
- Solid State Ionics Division
, Tomasz Pietrzak (FP / SSID)
Tomasz Pietrzak,,
- Solid State Ionics Division
Journal seriesIonics, ISSN 0947-7047, e-ISSN 1862-0760, (N/A 70 pkt)
Issue year2019
ASJC Classification1500 General Chemical Engineering; 2200 General Engineering; 2500 General Materials Science; 3100 General Physics and Astronomy
DOIDOI:10.1007/s11581-019-03229-5
Languageen angielski
Score (nominal)70
Score sourcejournalList
ScoreMinisterial score = 70.0, 16-01-2020, ArticleFromJournal
Publication indicators Scopus Citations = 0; WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0.668; WoS Impact Factor: 2018 = 2.289 (2) - 2018=2.203 (5)
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