揭示了使用固态反应的铜合CoSb3基热电材料
Dan Zhao1, Yonghua Ji1,2, Bingke Qin1
1School of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui 553004, China.
Materials (Basel, Switzerland)
|September 13, 2025
概括
用黄铜和添加的skutterudite (CoSb3) 复合材料显示了改善的热电性能. 这些材料为中温应用提供了增强的功率因子和降低的导热率.
科学领域:
- 材料科学 材料科学 材料科学
- 固态物理 固态物理
- 热电学是一种热电学.
背景情况:
- 基于Skutterudite (CoSb3) 的材料对中温热电应用具有前景.
- 它们的性能与电气性能和合金设计有关.
研究的目的:
- 为了合成和表征铜x/Co4Sb11.5Te0.5复合材料.
- 调查铜和联合剂对热电性质的影响.
主要方法:
- 合成中使用了高温固态反应.
- 使用X射线衍射 (XRD),扫描电子显微镜 (SEM) 和能量分散光谱 (EDS) 来进行分析.
主要成果:
- 观察到的主要晶体结构是CoSb3,具有较小的杂质相.
- 联合兴奋剂有效调节了载体度,并提高了功率因子.
- 纳米结构,颗粒边界和缺陷降低了晶格导热率.
结论:
- 铜0.1/Co4Sb11.5Te0.5在781 K.实现了0.81的高峰热电功率 (ZT) 在781 K.
- 这项研究表明了优化 skutterudite热电材料的可行策略.
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