?-AgVO3� 4AgI and AgNbO3� 4AgI: two new solid silver electrolytes at room temperature

Autor: G. H. J. Broers, A. Brouwer, B. B. Scholtens
Rok vydání: 1978
Předmět:
Zdroj: Journal of Applied Electrochemistry. 8:165-168
ISSN: 1572-8838
0021-891X
Popis: The specific conductivity of compounds in theβ-AgVO3-AgI system above 50 mol% AgI has been measured. A maximum value of the conductivity was observed at 80 mol% AgI. The temperature dependence of the specific conductivity of both the compoundsβ-AgVO3 · 4AgI and AgNbO3 · 4AgI was also measured. Activation energies are 3.7 kcal mol−1 and 3.8 kcal mol−1 respectively. The specific conductivity of theβ-AgVO3 based compound is much higher than that of the AgNbO3 analogue. The silver transport number in both compounds has been determined by Tubandt's method. In both cases a value of 1.00 ± 0.02 was found. Galvanic cells of the type Ag(s)/electrolyte (s)/C(I2) were constructed. Electrochemical measurements on these cells indicate a better performance of those cells with aβ-AgVO3 · 4AgI electrolyte with respect to the ones with an AgNbO3 · 4AgI electrolyte.
Databáze: OpenAIRE
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