Conductivity studies on LiX–Li2S–Sb2S3–P2S5 (X = LiI or Li3PO4) glassy system
Conductivity studies on LiX–Li2S–Sb2S3–P2S5 (X = LiI or Li3PO4) glassy system
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LiX–Li2S–Sb2S3–P2S5 (X = LiI 或 Li3PO4) 玻璃体系的电导率研究
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
E. Sánchez
中科院分区：
文献类型：
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作者：
Z. Nagamedianova;A. Hernández;E. Sánchez
Li2S-Sb2S3-P2S5 体系中的新型硫化物玻璃是通过经典淬火技术制备的，其中玻璃域保留了高达 50% 的 Li2S 摩尔添加量，并且电导率已通过阻抗谱测定。室温直流电导率与 Li2S 含量的关系呈现出两个区域，这意味着不同的电导率机制。低锂含量的组合物在室温下表现出接近 0.01 μS/cm 的低电子电导率（由于 Sb2S3 半导体特性）。中等锂含量的组合物可能会产生具有主要离子电导率的混合离子电子导体，其最大值接近 1 μS/cm；所有玻璃在 25°C 和 Tg 之间都存在阿伦尼乌斯行为，但发现活化能在某种程度上高于大多数类似系统。与属于其他硫族化物系统的玻璃进行了比较研究，报告了去耦指数的值，为了验证电导率数据，提出了电路等效电路，并计算了拟合参数，具有良好的一致性。
New sulfide glasses in the Li2S–Sb2S3–P2S5 system have been prepared by classical quenching technique where glassy domain remains up to 50% molar addition of Li2S and electrical conductivities have been determined by impedance spectroscopy. Room temperature DC conductivity vs Li2S content exhibits two regions implying different conductivity mechanisms. The compositions of low lithium content presented low electronic conductivities close to 0.01 μS/cm at room temperature (due to Sb2S3 semiconducting properties). The compositions of medium lithium content could result to mixed ionic–electronic conductors with predominant ionic conductivity with a maximum close to 1 μS/cm; Arrhenius behavior is found between 25 °C and Tg for all glasses, but activation energy is found to be somehow above most similar systems. A comparative study with glasses belonging to the other chalcogenide systems has been undertaken and values of the decoupling index are reported, and in order to validate conductivity data, a circuit equivalent circuit was proposed and fitted parameters were calculated with good agreement.