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Zintl phases for thermoelectric devices

机译:热电设备的Zintl相

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摘要

By converting waste heat into electricity and improving the efficiency of refrigeration systems,thermoelectric devices could play a significant role in solving today's energy problems.Increasing the thermoelectric efficiency(as measured by the thermoelectric material's figure-of-merit,zT)is critical to the development of this technology.Complex Zintl phases,in particular,make ideal candidates for thermoelectric materials because the necessary "electron-crystal,phonon-glass"properties can be engineered with an understanding of the Zintl chemistry.A recent example is the discovery that Yb14MnSb11,a transition metal Zintl compound,has twice the zT as the material currently in use at NASA.This perspective outlines a strategy to discover new high zT materials in Zintl phases,and presents results pointing towards the success of this approach.
机译:通过将废热转化为电能并提高制冷系统的效率,热电设备可以在解决当今的能源问题中发挥重要作用。提高热电效率(以热电材料的品质因数(zT)衡量)对热电设备至关重要。尤其是复杂的Zintl相,使其成为热电材料的理想候选者,因为可以通过了解Zintl化学性质来设计必要的“电子晶体,声子玻璃”性质。最近的一个例子是发现Yb14MnSb11过渡金属Zintl化合物的zT含量是NASA目前使用的材料的两倍。此观点概述了在Zintl相中发现新型高zT材料的策略,并提出了指向该方法成功的结果。

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