AC/DC conductivity studies of composites of glassy electronic and ionic conductors
Wioleta Ślubowska , Jan Nowiński , Tomasz Pietrzak , Jerzy Garbarczyk , Marek Wasiucionek
AbstractA series of all-glass composites has been prepared from the ionically conducting silver-phosphate glass 30AgI·35Ag2O·35P2O5 (denoted as I) and the electronically conducting vanadate-phosphate glass 90V2O5·10P2O5 (denoted as E). Component glasses were ground, mixed in five volume ratios (E:I = 3:1, 2:1, 1:1, 1:2, 1:3) and pelletized under pressure. X-ray diffractometry and DSC analyses confirmed an amorphous structure of both component glasses and all final composites. Electrical properties were investigated using DC (Hebb-Wagner polarization method) and AC (impedance spectroscopy) methods. The analysis of the impedance spectra (measured down to μHz) evolution with the proportions of the electronic-to-ionic component was done. Mixed character of the conductivity was confirmed and a synergy effect (charge storage capacity) arising from the interface interactions between glasses was observed. © 2016 Elsevier B.V. All rights reserved.
|Journal series||Solid State Ionics, ISSN 0167-2738|
|Publication size in sheets||0.5|
|Keywords in English||Spectroscopy; X ray diffraction analysis, Glass composites; Heterogeneous materials; Impedance spectroscopy; Mixed conductors; Phosphate glass, Glass|
|Score|| = 30.0, 28-11-2017, ArticleFromJournal|
= 35.0, 28-11-2017, ArticleFromJournal
|Publication indicators||: 2016 = 2.354 (2) - 2016=2.438 (5)|
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