开发Cu2Se/Ag2(S,Se) 基单体热电发电机,用于低等级废弃物热能采集
Artoni Kevin R Ang1,2, Itsuki Yamazaki1, Keisuke Hirata1
1Toyota Technological Institute, Nagoya, Aichi 468-8511, Japan.
ACS applied materials & interfaces
|September 28, 2023
概括
研究人员开发了一种新的,低成本的热电发电机,使用银和铜化物. 这种替代 bismuth telluride 提供了一个简单的制造工艺,可以从废热中获取清洁能源,非常适合物联网设备.
科学领域:
- 材料科学 材料科学 材料科学
- 收集能源 收集能源
- 固态物理 固态物理
背景情况:
- 热电发电机 (TEG) 为小型设备提供了清洁能源解决方案,解决了气候和能源问题.
- 传统的基于甲化物 (Bi2Te3) 的TEG是昂贵的,有毒的,需要复杂的制造.
- 低质量的废热回收对于可持续的能源采集至关重要.
研究的目的:
- 开发一种成本效益和环保的替代品,以Bi2Te3的TEG.
- 为了利用银 (Ag) 和铜 (Cu) 石灰化物用于单体TEG制造.
- 展示一个简单的,低能耗的制造工艺,以高效地收集废热能.
主要方法:
- 使用可伸缩的Ag2S0.55Se0.45和超静态的Cu2.075Se.75的单体TEG的制造.
- 优化设备组装以防止离子迁移并确保设备的稳固性.
- 热电性质的表征,包括功率 (zT) 和功率密度.
主要成果:
- Ag-和Cu-化物材料的zT值在300K时大约为0.5.
- 优化制造产生了密集,坚固的单体TEG,电接触电阻降低.
- 在30K的温度差 (ΔT) 时,达到0.68mW/cm2的最大功率密度.
结论:
- 基于基的单质TEGs为传统Bi2设备提供了可行的,低成本的替代方案.
- 开发的制造工艺对于废热回收来说是简单,快速和节能的.
- 这些发现凸显了能源采集在物联网 (IoT) 应用中的广泛采用潜力.
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