...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Thermoelectric and electrical transport properties of Mg2Si multi-doped with Sb, Al and Zn
【24h】

Thermoelectric and electrical transport properties of Mg2Si multi-doped with Sb, Al and Zn

机译：掺Sb，Al和Zn的Mg2Si的热电和输电性质

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Enhanced thermoelectric and electrical transport properties of Mg2Si-based thermoelectric materials have been achieved by multi-doping with Sb, Al and Zn. Results on the investigation of the electrical transport and thermoelectric properties of multi-doped samples prepared using the spark plasma sintering technique are reported. Synchrotron radiation powder X-ray diffraction was used to characterize the structures of the doped samples. The electrical transport properties were determined from mid-infrared reflectivities, Hall effect and conventional quasi-four probe conductivity measurements. Using the electron concentrations (N) determined from the Hall coefficients, the effective masses (m*) were calculated from the frequency of the plasma edge (omega(P)) of the infrared reflectivities. The thermoelectric performance and thermoelectric figure of merits (ZT) in the temperature range of 300 K to 900 K of the doped Mg2Si compounds were calculated from the measured temperature dependent electrical conductivity (s), Seebeck coefficient (S), and thermal conductivity (k). A maximum ZT of 0.964 was found for Sb0.5% Zn0.5% doped Mg2Si at 880 K. This value is comparable to those of PbTe based thermoelectric materials.
机译：通过对Sb，Al和Zn进行多次掺杂，可以提高Mg2Si基热电材料的热电和电传输性能。报道了使用火花等离子体烧结技术制备的多掺杂样品的电输运和热电性能的研究结果。同步辐射粉末X射线衍射用于表征掺杂样品的结构。根据中红外反射率，霍尔效应和常规的准四探针电导率测量来确定电传输特性。使用由霍尔系数确定的电子浓度（N），由红外反射率的等离子边缘频率（omega（P））计算有效质量（m *）。根据测得的温度相关电导率（s），塞贝克系数（S）和热导率（k），计算出掺杂Mg2Si化合物在300 K至900 K温度范围内的热电性能和热电品质因数（ZT）。 ）。发现在880 K下掺杂Sb0.5％Zn0.5％的Mg2Si的最大ZT为0.964。该值可与基于PbTe的热电材料相媲美。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号