Transport properties of CdI2-doped silver ion conducting system: validation with first-principle DFT estimations

Conduction mechanisms in x CdI 2  − (1 −  x ) (0.3 Ag 2 O–0.3 V 2 O 5 –0.3 P 2 O 5 –0.1 ZnO), x  = 0.1, 0.2, and 0.3, have been explored using DC and AC conductivity, and it is remarkable to note that the bulk resistivity for x  = 0.2 is higher than that for x  = 0.1. Higher CdI 2 content may be fav...

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Bibliographic Details
Published in:Ionics 2022, Vol.28 (5), p.2285-2292
Main Authors: Poddar, Asmita, Das, Shayeri, Roy, Madhab, Bhattacharya, Koyel, Bhattacharya, Sanjib
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Conduction
Electrical resistivity
Electrochemistry
Energy Storage
First principles
Ion motion
Optical and Electronic Materials
Original Paper
Percolation
Phosphorus pentoxide
Renewable and Green Energy
Silver
Transport properties
Zinc oxide
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Summary:Conduction mechanisms in x CdI 2  − (1 −  x ) (0.3 Ag 2 O–0.3 V 2 O 5 –0.3 P 2 O 5 –0.1 ZnO), x  = 0.1, 0.2, and 0.3, have been explored using DC and AC conductivity, and it is remarkable to note that the bulk resistivity for x  = 0.2 is higher than that for x  = 0.1. Higher CdI 2 content may be favorable for Ag + ion motion as the resistivity decreases abruptly for x  = 0.3. Frequency exponent can be associated to the increase in degree of disorder in the materials on complexation with CdI 2 salt, which is associated with percolation motion of long-range transport of Ag + . As the CdI 2 increases, more number of Cd–Ag exchange is expected to increase, which results to the enhancement of DC conductivity. DFT-generated values of DOS have been utilized to explore the electronic behavior with a note of possible Cd–Ag exchange.
ISSN:0947-7047
1862-0760
DOI:10.1007/s11581-022-04462-1