Nanocrystallisation in vanadate phosphate and lithium iron vanadate phosphate glasses

Tomasz Pietrzak , Jerzy Garbarczyk , Marek Wasiucionek , Jan Nowiński

Abstract

In this paper we have summarised our recent research on nanocrystallisation in vanadate-phosphate (VP) and lithiumiron-vanadate-phosphate (LFVP) glasses. These materials are amorphous analogues of crystalline V2O5 or LiFePO4 cathode materials for Li-ion batteries. The influence of synthesis and further thermal treatment conditions on electrical, thermal and electrochemical properties has been studied. In particular, a significant increase in electronic conductivity (up to 0.7×10-1 and 7×10-3 S/cm for VP and LFVP nanomaterials, respectively) was observed as a result of thermal nanocrystallisation. The microstructure has been observed and studied by a combination of XRD, SEM/TEM and EDX methods. Densely packed, small (15-30 nm and 5-15 nm in size) grains were observed in VP and LFVP materials, respectively. The significant increase in the conductivity is discussed in terms of Mott's model of electron hopping and a core-shell model. copyright © of the Society.
Author Tomasz Pietrzak ZJCS
Tomasz Pietrzak,,
- Solid State Ionics Division
, Jerzy Garbarczyk ZJCS
Jerzy Garbarczyk,,
- Solid State Ionics Division
, Marek Wasiucionek ZJCS
Marek Wasiucionek,,
- Solid State Ionics Division
, Jan Nowiński ZJCS
Jan Nowiński,,
- Solid State Ionics Division
Journal seriesPhysics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B, ISSN 1753-3562
Issue year2016
Vol57
No3
Pages113-124
Publication size in sheets0.55
Keywords in EnglishCathodes; Glass; Lithium compounds; Lithium-ion batteries; Nanocrystals, Cath-ode materials; Core-shell model; Electron hopping; Electronic conductivity; Nanocrystallisation; Phosphate glass; Recent researches; Treatment conditions, Amorphous materials
DOIDOI:10.13036/17533562.57.3.038
URL https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977659167&partnerID=40&md5=521e366fbe8bea586c745e3aa0a75d88
Languageen angielski
Score (nominal)20
ScoreMinisterial score = 20.0, 28-11-2017, ArticleFromJournal
Ministerial score (2013-2016) = 20.0, 28-11-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 0.588 (2) - 2016=0.574 (5)
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