卡尔法德加速设计了先进的全铁热电装置
Li Yin1,2, Xiaofang Li2, Xin Bao1
1School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen, 518055, P.R. China.
Nature communications
|February 17, 2024
概括
一项新的选策略将Mg2Ni确定为热电器件的理想接触层. 这种方法可以在低温下制造高效可靠的热电发电设备.
科学领域:
- 材料科学 材料科学 材料科学
- 固态物理 固态物理
- 纳米技术纳米技术
背景情况:
- 热电材料由于不同的特性需要定制的接触层,使设备制造复杂化.
- 一个通用的接口设计和连接技术对于推进热电设备至关重要.
研究的目的:
- 为热电器件选择接触材料制定总体策略.
- 为了使高效的Zintl相热电器件能够在低温下制造.
主要方法:
- 接触材料的计算选使用CALPHAD法.
- 使用低温烧结银纳米粒子制造热电设备.
- 热电设备的性能和可靠性测试.
主要成果:
- 已确定Mg2Ni为n型Mg3Sb2基热电材料的合适接触层.
- 单脚n型Mg3.15Co0.05SbBi0.99Se0.01装置实现了~13.3%的效率.
- 一个Zintl相热电装置在430K的温度差异下实现了~11%的效率.
- 证明了Mg2Ni/Mg3.15Co0.05SbBi0.99Se0.01接口和纳米银接头的长期可靠性.
结论:
- 拟议的选策略对于识别热电接触材料是有效的.
- 低温烧结银纳米粒子有助于高效的Zintl相热电器件制造.
- 开发的接口和连接技术确保了热电发电的长期可靠性.
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