期刊

Joule

标题

Next-generation thermoelectric cooling modules based on high-performance Mg3(Bi,Sb)2 material

作者

JiaweiYang, GuodongLi, HangtianZhu, NanChen, TianboLu, JunlingGao, LiweiGuo, JunsenXiang, PeijieSun, YuanYao, RongguiYang, HuaizhouZhao

摘要

As the core component of any real thermoelectric cooling system, the Bi2Te3-based modules have been used for decades. Recently, n-type Mg3(Bi,Sb)2 material was proposed as a promising substitute for Bi2Te3. However, the fabrication of commercially viable modules with such new materials is challenging. Herein, full-scale cooling modules based on the optimized n-type Mg3.2Bi1.4975Sb0.5Te0.0025 and p-type (Sb0.75Bi0.25)2(Te0.97Se0.03)3 were successfully fabricated. A maximum ΔT of 76 K with the hot-side temperature of 350 K, a COP of 8 with a temperature difference of 5 K, and a serving time >6 months were achieved. These were attributed to the enhanced stability and well-secured n-type transport of the Mg3.2Bi1.4975Sb0.5Te0.0025, a highly reliable Mg2Cu barrier layer, and other key techniques involved in the module assembling. The most striking benefit of our modules lies in its 23% higher performance-cost ratio over commercial Bi2Te3 system, which paves its way for next-generation thermoelectric cooling applications.

原文链接

https://www.sciencedirect.com/science/article/abs/pii/S2542435121005341