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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.11 [2004] >
IJEMS Vol.11(3) [June 2004] >
| Title: | Preparation and characterization of mixed halide systems as solid electrolyte base |
| Authors: | Gupta, Archana
Sil, Anjan
Verma, N K |
| Issue Date: | Jun-2004 |
| Publisher: | CSIR |
| IPC Code: | Int. Cl.7 C 01 B 9/02 |
| Abstract: | The preparations of mixed halide
matrices KCl:NaCl and BaCl2:KCl and the effect of ionic size and
valency difference of cations on the ionic conductivity of mixed halides are
reported in this paper. The ionic conductivities of mixed halide matrices
[(KCl)(1 - x):(NaCl)x ; 0≤x≤0.4] and [(BaCl2)(1
- y):(KCl)y; 0≤y≤0.5] have been investigated by impedance
spectroscopy method. The compositions (KCl)0.9:(NaCl)0.1 and
(BaCl2)0.9:(KCl)0.1 are found to be highly conducting. The thermal
characterizations by TG and DTA of the samples of highly conducting
compositions have shown no evidence of new compound formation. A simple model based on the wrong size
substitution has been applied to understand conductivity enhancement in the
mixed matrices. In the case of (BaCl2)0.9:(KCl)0.1,
the conductivity enhancement could be attributed to the net charge transfer
across the interface of the biphasic mixture. However, for the (KCl)0.9:(NaCl)0.1
system, the wrong ionic size plays
a significant role in the conductivity enhancement. |
| Page(s): | 212-216 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.11(3) [June 2004]
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