屏障物质积累对基于Bi2Te3的热电发电机性能的影响
Kun Song1, Junhua Xie1, Guosong Liu1
1School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing 211800, China.
ACS applied materials & interfaces
|July 22, 2025
概括
在高 bismuth 化物 (Bi2Te3) 热电发电机 (TEG) 中优化屏障层显著提高了性能. 控制电提高了输出功率和转换效率,同时提高了接口强度.
科学领域:
- 材料科学 材料科学 材料科学
- 能源转换 能源转换
- 纳米技术纳米技术
背景情况:
- 热电材料和电极之间的接口对于热电发生器 (TEG) 的性能至关重要.
- (Ni) 是一种常见的屏障材料,用于基于甲化物 (Bi2Te3) 的TEG,通常通过电应用.
- 屏障材料在接口上的积累可以阻碍TEG效率和机械完整性.
研究的目的:
- 调查屏障物质积累对TEG性能的影响.
- 优化电工艺,以提高屏障层的统一性.
- 提高基于Bi2Te3的TEG的输出功率,转换效率和接口强度.
主要方法:
- 在Bi2Te3热电材料上用作为屏障材料进行电.
- 界面的表征,以评估障碍物质积累.
- 优化电参数以实现统一的屏障层.
- 测量TEG输出功率,转换效率和界面粘合强度.
主要成果:
- 屏障材料的积累使输出功率降低了30%以上,界面强度降低了大约18%.
- 优化的电导致最大输出功率为0.62W,转换效率为5.1%.
- 优化的统一接口表现出 49.36 N 的粘合强度,比累积接口高 22.6%.
结论:
- 统一的屏障层对于最大限度地提高TEG性能至关重要.
- 优化屏障的电显著提高了功率输出,效率和机械稳定性.
- 这项工作为制造高性能热电发电机提供了途径.
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