Enhancement of thermoelectric performance of Mg<sub>2</sub>Sn single crystals via lattice-defect engineering
Enhancement of thermoelectric performance of Mg<sub>2</sub>Sn single crystals via lattice-defect engineering
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通过晶格缺陷工程增强Mg<sub>2</sub>Sn单晶的热电性能
DOI：
10.11470/jsaprev.220403
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Hayashi Kei
中科院分区：
文献类型：
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作者：
Huang Zhicheng;Hayashi Kei;Saito Wataru;Pei Jun;Li Jing-Feng;Miyazaki Yuzuru;Hayashi Kei
由于需要实现低碳社会，对清洁能源的需求不断增加。利用塞贝克效应产生的热电 (TE) 电力是一种清洁能源技术，可以利用未使用的热量进行发电。近年来，人们开发了不同的方法来提高用于TE发电的TE材料的性能。该期刊报道了TE材料的发展研究：(a)人造超晶格和二维电子气的利用[1]，(b)磁性元素的利用[2]，(c)磁畴边界的控制[3]，(d)纳米结构的建立[4-6]。一般情况下，TE材料的性能采用无量纲品质因数zT来评价，如式(1)所示：zT ¼ S2 T ð1Þ 其中S、σ、κ和T分别是塞贝克系数（1K温差产生的电动势）、电导率、导热率和绝对温度。热导率由式（2）确定：
The demand for clean energy is increasing, owing to the need to achieve a low-carbon society. Thermoelectric (TE) power generated using the Seebeck effect is a clean energy technology and enables power generation from unused heat. In recent years, different methods for improving the performance of TE materials used for TE power generation have been developed. Research on the development of TE materials has been reported in this journal:(a) utilization of artificial superlattices and two-dimensional electron gases [1],(b) utilization of magnetic elements [2],(c) control of domain boundaries [3], and (d) establishment of nanostructures [4–6]. Generally, the performance of TE materials is evaluated using the dimensionless figure of merit zT expressed by Eq.(1): zT ¼ S2 T ð1Þ where S, σ, κ, and T are the Seebeck coefficient (electromotive force generated by a temperature difference of 1K), electrical conductivity, thermal conductivity, and absolute temperature, respectively. The thermal conductivity is determined using Eq.(2):