Interaction of I2 with Ag7I4PO4

✍ Scribed by J.R. Casanova; J.C. Lopez Tonazzi; J.I. Franco

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 323 KB
• Volume: 96
• Category: Article
• ISSN: 0167-2738
• DOI: 10.1016/s0167-2738(96)00618-2

✦ Synopsis

The stability of the solid electrolyte Ag,I,PO, in the presence of iodine under different conditions has been studied. When the iodine concentration is 1.7 X lo-' mol 1-l .

m the gaseous environment, this compound can absorb up to 175 times its volume of gaseous I,, measured at STP Under 60% humidity, the sample weight increases linearly with time, reaching after 280 h a maximum ratio of 1.8 mol of iodine per mol of Ag,I,PO,.

X-ray diffraction studies showed the formation of P-AgI and y-AgI while the original compound is consumed. For a dry environment, we observed a continuous increase in sample weight with time up to 1.33 mol of iodine per mol of Ag,I,PO, without saturation after 1460 h.