Electrical properties vs. microstructure of nanocrystallized V2O5–P2O5 glasses — An extended temperature range study

Tomasz Pietrzak , Jerzy Garbarczyk , Marek Wasiucionek , I. Gorzkowska , Jan Nowiński , S. Gierlotka

Abstract

An electronically conducting nanomaterial was synthesized by nanocrystallization of a 90V2O5·10P2O5 glass and its electrical properties were studied in an extended temperature range from − 170 to + 400 °C. The conductivity of the prepared nanomaterial reaches 2 ∙ 10− 1 S cm− 1 at 400 °C and 2 ∙ 10− 3 S cm− 1 at room temperature. It is higher than that of the original glass by a factor of 25 at room temperature and more than 100 below − 80 °C. A key role in the conductivity enhancement was ascribed to the material's microstructure, and in particular to the presence of the large number of small (ca. 20 nm) grains of crystalline V2O5. The observed conductivity dependencies are discussed in terms of the Mott's theory of the electronic hopping transport in disordered systems. Since V2O5 is known for its ability to intercalate lithium, the presented results might be helpful in the development of cathode materials for Li-ion batteries.
Author Tomasz Pietrzak (FP / SSID)
Tomasz Pietrzak,,
- Solid State Ionics Division
, Jerzy Garbarczyk (FP / SSID)
Jerzy Garbarczyk,,
- Solid State Ionics Division
, Marek Wasiucionek (FP / SSID)
Marek Wasiucionek,,
- Solid State Ionics Division
, I. Gorzkowska - [Warsaw University of Technology (PW), MNiSW [80]]
I. Gorzkowska,,
-
- Politechnika Warszawska
, Jan Nowiński (FP / SSID)
Jan Nowiński,,
- Solid State Ionics Division
, S. Gierlotka - [High Pressure Research Center of the Polish Academy of Sciences]
S. Gierlotka,,
-
-
Journal seriesSolid State Ionics, ISSN 0167-2738, (A 35 pkt)
Issue year2011
Vol192
No1
Pages210-214
Publication size in sheets0.5
Keywords in EnglishCathode materials, Electron hopping, Nanocrystallization, Nanomaterials, V2O5–P2O5 glasses
ASJC Classification3104 Condensed Matter Physics; 2500 General Materials Science; 1600 General Chemistry
DOIDOI:10.1016/j.ssi.2010.05.018
URL http://www.sciencedirect.com/science/article/pii/S0167273810002523
Languageen angielski
Score (nominal)35
Score sourcejournalList
Publication indicators WoS Citations = 15; Scopus Citations = 18; GS Citations = 11.0; Scopus SNIP (Source Normalised Impact per Paper): 2011 = 1.615; WoS Impact Factor: 2011 = 2.646 (2) - 2011=3.097 (5)
Citation count*11 (2015-05-15)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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