在IV-VI组热电模块中实现了约11.3%的优异转换效率
Jinxuan Cheng1, Li Yin1, Xinyu Wang2
1School of Materials Science and Engineering, and Institute of Materials Genome & Big Data, Harbin Institute of Technology, Shenzhen, 518055, China.
Small (Weinheim an der Bergstrasse, Germany)
|February 11, 2024
概括
研究人员使用纳米银烧结和Ti-Al合金为 Telluride (GeTe) 热电器件开发了一个稳定的接口. 这一突破提高了发电应用的设备效率和可靠性.
科学领域:
- 材料科学 材料科学 材料科学
- 热电学是一种热电学.
- 纳米技术纳米技术
背景情况:
- 基于 Telluride (GeTe) 的材料具有高的热电潜力.
- 由于GeTe相位过渡,接口不稳定性阻碍了设备的开发.
研究的目的:
- 为基于GeTe的热电发电机设计一个可靠的接口.
- 提高热电模块的长期稳定性和转换效率.
主要方法:
- 使用低温纳米银烧结.
- 选并使用Ti-Al合金用于接口工程.
- 研究了界面反应层和电接触电阻.
主要成果:
- 实现了稳定的Ti-Al金属间化合物接口,抑制了扩散.
- 在773 K的老化后保持低的接口电接触电阻 (≈15.2 μΩ cm2) .
- 在GeTe/PbTe模块中显示了约11.3%的高热电转换效率.
结论:
- 开发的接口策略显著提高了GeTe热电器件的可靠性.
- 这一进步促进了高性能GeTe材料在热电发电中的实际应用.
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