T-x diagram and transport properties of the GeSe-GeI2 solid electrolyteстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The T-x diagram for the GeSe-GeI2 system was plotted based on DTA, XRD, and conductivity data. The diagram features a simple eutectic and a limited region of solid solutions with prevalent GeSe content. It was established that, in the region of solid solutions, the properties of the GeSe-GeI2 solid electrolyte are substantially dependent on the concentration of the GeI2 dopant. The highest conductivity (10(-3)- 10(-4) S/cm at 150 degrees C), lowest activation energy of electric conduction (0.3-0.4 eV), and lowest electronic (hole) transport numbers (10(-5)-10(-7) at 150 degrees C) at high ionic (similar to 1.0) and cationic (0.9-1.0) transport numbers were observed at a GeI2 concentration of 3-6 mol %. In the two-phase region, the transport properties (conductivity and activation energy of conduction) only slightly depend on the dopant concentration.