Investigation of AgI-Based Solid Solutions with Ag₂CO₃

• الحاوية / القاعدة: Technologies
• المؤلفون الرئيسيون: Kento Uchida, Yuta Matsushima
• التنسيق: مقال
• اللغة: الإنجليزية
• منشور في: MDPI AG 2021-07-01
• الموضوعات: solid electrolyte; ionic conductor; solid solution; silver carbonate iodide; AgI; Ag₂CO₃
• الوصول للمادة أونلاين: https://www.mdpi.com/2227-7080/9/3/54
• تدمد: 2227-7080

The formation phenomena of silver carbonate (Ag₂CO₃)–silver iodide (AgI) solid solutions were investigated by X-ray diffraction, thermogravimetry-differential thermal analysis, and electrical conductivity measurement. Results revealed that AgI and Ag₂CO₃ reacted with each other when mixed at room temperature. The reaction products were classified into three types: (1) AgI-based solid solutions in the AgI-rich region for <i>x</i> = 10% or less in <i>x</i> Ag₂CO₃–(1 − <i>x</i>) AgI; (2) Ag₂CO₃-based solid solutions in the Ag₂CO₃-rich region for <i>x</i> = 60% or more; and (3) silver carbonate iodides in the intermediate range for <i>x</i> between 10% and 60%. For the AgI-based solid solutions, the incorporation of Ag₂CO₃ into the AgI lattice expanded the unit cell and enhanced electrical conductivity. The solubility limit of Ag₂CO₃ into the AgI lattice estimated from the differential thermal analysis was <i>x</i> ≈ 5%.