Micro-thermoelectric generators based on through glass pillars with high output voltage enabled by large temperature difference
Micro-thermoelectric generators based on through glass pillars with high output voltage enabled by large temperature difference
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基于穿玻璃柱的大温差高输出电压微型热电发电机
DOI：
10.1016/j.apenergy.2018.05.056
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发表时间：
2018-09
期刊：
影响因子：
11.2
通讯作者：
Ce-Wen Nan
中科院分区：
文献类型：
--
作者：
Shuang Liu;Bingkun Hu;Dawei Liu;Fu Li;Jing-Feng Li;Bo Li;Liangliang Li;Yuan-Hua Lin;Ce-Wen Nan
微型温差发电器可以将低品位的废热转化为电能，在可穿戴电子、无线传感器、医疗设备等方面具有潜在的应用前景，但由于其温差腿短，不能在器件上建立较大的温差，提高其输出电压和功率具有挑战性。在本工作中，我们通过200 μm长的玻璃柱制作了一个基于Bi 2 Te 3和Sb 2 Te 3的微型热电发电器。这些热电柱被电沉积在玻璃模板的通孔中，并且玻璃模板用于支撑热电柱。成功地建立了温差为138 K的热电发生器与4个热电偶。在138 K的温差下，器件的最大输出电压为40.89 mV;每个热电偶提供10.22 mV的电压。器件的最大输出功率为19.72 μW。基于薄膜沉积技术的交叉平面微型温差发电器的温差和单热电偶输出电压都是文献中最大的。此外，通过有限元模拟，研究了热电柱长度和覆盖率对热电发电器性能的影响。实验和仿真数据均表明，利用玻璃柱作为热电源是提高交叉平面微型温差发电器温差和输出电压的有效途径。
Micro-thermoelectric generators can convert low-grade waste heat to electrical power and have potential applications in wearable electronics, wireless sensors, medical devices and so on. It is challenging to increase the output voltage and power of the cross-plane micro-thermoelectric generators, because their thermoelectric legs are short and a large temperature difference cannot be established on the devices. In this work, we fabricate a micro-thermoelectric generator based on Bi2Te3and Sb2Te3through glass pillars with a length of 200 μm. These thermoelectric pillars are electrodeposited in the through holes of glass templates, and the glass templates are used to support the pillars. A temperature difference of 138 K is successfully established for the thermoelectric generator with 4 thermocouples. The maximum output voltage of the device is 40.89 mV under a temperature difference of 138 K; each thermocouple delivers a voltage of 10.22 mV. The maximum output power of the device is 19.72 μW. Both the temperature difference and the output voltage per thermocouple are the largest for the cross-plane micro-thermoelectric generators based on thin-film deposition technologies in the literature. In addition, finite element modeling is carried out to study the effects of the length and coverage rate of the thermoelectric pillars on the performance of the thermoelectric generators. Both the experimental and simulation data show that it is an effective way to enhance the temperature difference and output voltage of cross-plane micro-thermoelectric generators using through glass pillars.
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DOI：
10.2172/1218707
发表时间：
2004-12
期刊：
--
影响因子：
--
作者：
J. Pellegrino;N. Margolis;M. Justiniano;Melanie J. Miller;Arvind Thedki
通讯作者：
J. Pellegrino;N. Margolis;M. Justiniano;Melanie J. Miller;Arvind Thedki
影响因子：
11.2
作者：
Kyle Pietrzyk;J. Soares;Brandon Ohara;Hohyun Lee
通讯作者：
Kyle Pietrzyk;J. Soares;Brandon Ohara;Hohyun Lee
影响因子：
--
作者：
P. Hidnert
通讯作者：
P. Hidnert
实现%20a%20热电%20转换%20效率%20of%2012%%20in%20铋%20碲化物/方钴矿%20分段%20模块%20through%20全参数%20优化%20和%20能量损失%20最小化%20集成
影响因子：
32.5
作者：
Zhang Qihao;Liao Jincheng;Tang Yunshan;Gu Ming;Ming Chen;Qiu Pengfei;Bai Shengqiang;Shi Xun;Uher Ctirad;Chen Lidong
通讯作者：
Chen Lidong
影响因子：
2.5
作者：
Dawei Liu;Jingfeng Li
通讯作者：
Dawei Liu;Jingfeng Li