...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Thermoelectric Properties of Nano-grained Mooihoekite Cu_9Fe_9S_(16)
【24h】

Thermoelectric Properties of Nano-grained Mooihoekite Cu_9Fe_9S_(16)

机译：纳米颗粒Moohoekite Cu_9Fe_9S_（16）的热电性能

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

Cu-Fe-S-based compounds gain the interest from thermoelectric community because all the consisting elements, Cu, Fe, and S, are non-toxic and earth-abundant. Comparing with CuFeS_2 and Cu_5FeS_4, the investigation on Cu_9Fe_9S_(16) is very rare. In this work, a series of Cu_(9-x)Fe_(9+x)S_(16) samples were fabricated by means of meltingannealing process. Their phase composition, microstructure, electrical and thermal transport properties were systematically investigated. Xray measurement confirms that all samples are phase pure. Transmission electron microscopy characterization indicates that the fabricated Cu_9Fe_9S_(16) has a natural nanostructure. Cu_9Fe_9S_(16) shows semiconducting- like electrical transport behavior and intrinsically low lattice thermal conductivity. Beyond the numerous boundaries between nanosized grains, the existence of low-frequency optical phonons is also responsible for the intrinsically low lattice thermal conductivity. Doping Fe at the Cu-sites in Cu_9Fe_9S_(16) significantly alters the electrical transport properties by introducing extra carriers. A peak dimensionless figure of merit zT value of 0.21 is obtained at 800 K for pure Cu_9Fe_9S_(16), which is comparable with that for CuFeS_2.
机译：Cu-Fe-S基化合物因其组成元素Cu、Fe和S无毒且富含地球而受到热电界的关注。与CuFeS_2和Cu_5FeS_4相比，对Cu_9Fe_9S_（16）的研究非常少见。本文采用熔融退火工艺制备了一系列Cu_9-x）Fe_9+x）S_16样品。系统地研究了它们的相组成、微观结构、电学和热传输性能。X射线测量确认所有样品均为纯相。透射电子显微镜表征表明，所制备的Cu_9Fe_9S_16具有天然的纳米结构。Cu_9Fe_9S_16显示出类似半导体的电输运行为和固有的低晶格热导率。除了纳米颗粒之间的众多边界之外，低频光学声子的存在也是晶格热导率本质较低的原因。在Cu_9Fe_9S_16中的Cu位掺杂Fe通过引入额外的载流子显著改变了电输运性质。在800 K下，纯Cu_9Fe_9S_16的峰值无量纲优值zT值为0.21，这与CuFeS_2相当。

著录项

  • 来源
  • 作者

    Xianxiu Qiu; Pengfei Qiu; Tingting Deng; Hui Huang; Xiaolong Du; Xun Shi; Lidong Chen;

  • 作者单位

    State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 P. R. China;

    State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 P. R. China;

    State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 P. R. China;

    State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 P. R. China;

    State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 P. R. China;

    State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 P. R. China;

    State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 P. R. China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

    Mooihoekite; Cu_9Fe_9S_(16); Nano-grained; Thermoelectric; Low thermal conductivity;

    机译：moohoekite;Cu_9fe_9s_（16）;纳米颗粒;热电;低导热率;

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