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Mg3Sb2-based thermoelectric material with high-temperature stability and preparation method thereof
The invention provides an Mg3Sb2-based thermoelectric material with high-temperature stability and a preparation method thereof, and relates to the technical field of thermoelectric materials. The Mg3Sb2-based thermoelectric material provided by the invention comprises a Mg3-3.2 Sb1. 5Bi0. 5-xTex thermoelectric block material and a boron nitride coating deposited on the surface of the Mg3-3.2 Sb1. 5Bi0. 5-xTex thermoelectric block material, 0 < x < = 0.06. The boron nitride coating is introduced into the Mg3Sb2-based thermoelectric material, the thermoelectric performance of the Mg3Sb2-based thermoelectric material is very stable at high temperature under the protection of the boron nitride coating, Mg loss at the high temperature can be effectively inhibited, the working temperature of the Mg3Sb2-based thermoelectric material is greatly improved, and thus the thermoelectric conversion efficiency of the Mg3Sb2-based thermoelectric material at the high temperature is guaranteed. The Mg3Sb2-based thermoelectric material is very stable in thermoelectric performance even at a high temperature of 500 DEG C.
本发明提供了一种具有高温稳定性的Mg3Sb2基热电材料及其制备方法，涉及热电材料技术领域。本发明提供的Mg3Sb2基热电材料包括Mg3～3.2Sb1.5Bi0.5‑xTex热电块体材料和沉积在所述Mg3～3.2Sb1.5Bi0.5‑xTex热电块体材料表面的氮化硼涂层；0＜x≤0.06。本发明在Mg3Sb2基热电材料中引入氮化硼涂层，Mg3Sb2基热电材料在氮化硼涂层的保护下热电性能在高温下非常稳定，可以有效抑制高温下的Mg损失，大大提高Mg3Sb2基热电材料的工作温度，并因此保证了其在高温下热电转换效率。本发明提供的Mg3Sb2基热电材料即使在500℃高温下热电性能也非常稳定。
Mg3Sb2-based thermoelectric material with high-temperature stability and preparation method thereof
The invention provides an Mg3Sb2-based thermoelectric material with high-temperature stability and a preparation method thereof, and relates to the technical field of thermoelectric materials. The Mg3Sb2-based thermoelectric material provided by the invention comprises a Mg3-3.2 Sb1. 5Bi0. 5-xTex thermoelectric block material and a boron nitride coating deposited on the surface of the Mg3-3.2 Sb1. 5Bi0. 5-xTex thermoelectric block material, 0 < x < = 0.06. The boron nitride coating is introduced into the Mg3Sb2-based thermoelectric material, the thermoelectric performance of the Mg3Sb2-based thermoelectric material is very stable at high temperature under the protection of the boron nitride coating, Mg loss at the high temperature can be effectively inhibited, the working temperature of the Mg3Sb2-based thermoelectric material is greatly improved, and thus the thermoelectric conversion efficiency of the Mg3Sb2-based thermoelectric material at the high temperature is guaranteed. The Mg3Sb2-based thermoelectric material is very stable in thermoelectric performance even at a high temperature of 500 DEG C.
本发明提供了一种具有高温稳定性的Mg3Sb2基热电材料及其制备方法，涉及热电材料技术领域。本发明提供的Mg3Sb2基热电材料包括Mg3～3.2Sb1.5Bi0.5‑xTex热电块体材料和沉积在所述Mg3～3.2Sb1.5Bi0.5‑xTex热电块体材料表面的氮化硼涂层；0＜x≤0.06。本发明在Mg3Sb2基热电材料中引入氮化硼涂层，Mg3Sb2基热电材料在氮化硼涂层的保护下热电性能在高温下非常稳定，可以有效抑制高温下的Mg损失，大大提高Mg3Sb2基热电材料的工作温度，并因此保证了其在高温下热电转换效率。本发明提供的Mg3Sb2基热电材料即使在500℃高温下热电性能也非常稳定。
Mg3Sb2-based thermoelectric material with high-temperature stability and preparation method thereof
一种具有高温稳定性的Mg3Sb2基热电材料及其制备方法
DING FAZHU (author) / GU HONGWEI (author) / SHANG HONGJING (author) / HUANG DAXING (author) / XIE BOWEI (author) / GAO ZHAOSHUN (author) / LI TAIGUANG (author) / ZOU QI (author)
2021-07-16
Patent
Electronic Resource
Chinese
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