Synthesis, theoretical investigation and properties of nanocomposite thermoelectric materials

纳米复合热电材料的合成、理论研究及性能

• 批准号: 121285155
• 负责人: Professor Dr. Lorenz Kienle
• 金额: --
• 依托单位: Abteilung Physikalische und Theoretische Chemie
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2016-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/121285155?language=en
• 关键词: Synthesis; theoretical; investigation; properties; nanocomposite

Central goal of this project is the investigation of the influence of the microstructure of Skutterudites and lead telluride-based materials on their properties. The microstructural phenomena under investigation encompass compositional gradients, formation of precipitates on the nanoscale, grain growth and segregation processes and the formation of cluster structures in a percolation network. It is a key aspect of this proposal that the structural changes are correlated to changes in properties and theoretical calculations on the local properties and electronic states of the respective thermoelectric material. In addition, a potential applicability of thermocouples of p-/n-type Skutterudites and p-type LAST/n-type Pb-Bi-Te will be evaluated. A direct comparison of high-quality TEM information, theoretical results and property profiles is directed versus better predictability of thermoelectric properties of nanopowder materials.

该项目的中心目标是研究方钴矿和碲化铅基材料的微观结构对其性能的影响。所调查的微观结构现象包括成分梯度，在纳米级上的沉淀物的形成，晶粒生长和偏析过程和在渗滤网络中的簇结构的形成。该提议的一个关键方面是，结构变化与相应热电材料的局部性质和电子状态的性质和理论计算的变化相关。此外，p-/n-型Skutterudites和p-型LAST/n-型Pb-Bi-Te热电偶的潜在适用性将被评估。直接比较高质量的TEM信息，理论结果和属性配置文件是针对纳米粉末材料的热电性能的更好的可预测性。

项目成果

Thermoelectric efficiency of (1 - x)(GeTe) x(Bi2Se0.2Te2.8) and implementation into highly performing thermoelectric power generators.

• DOI: 10.1039/c4dt03425b
• 发表时间: 2015-01
• 期刊: Dalton transactions
• 影响因子: 4
• 作者: J. Koenig;M. Winkler;T. Dankwort;Anna‐Lena Hansen;H. Pernau;V. Duppel;M. Jaegle;K. Bartholomé