Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-performance n-type bismuth telluride-based thermoelectric material and preparation method thereof
The invention discloses a high-performance n-type bismuth telluride-based thermoelectric material and a preparation method thereof.The preparation method of the thermoelectric material comprises the following steps that Ag powder and Se powder are weighed according to the stoichiometric ratio and mixed to obtain mixed powder, and the mixed powder is sequentially subjected to smelting treatment and ball milling treatment to obtain Ag2Se powder; and uniformly mixing n-type Bi2Te3-xSex powder and the prepared Ag2Se powder, and sintering to obtain the high-performance n-type bismuth telluride-based thermoelectric material. The value of x in the n-type Bi < 2 > Te < 3-x > Se < x > powder is 0 to 1.0. And the high-performance n-type bismuth telluride-based thermoelectric material with improved power factor and reduced thermal conductivity is prepared. According to the invention, the nano Ag2Se material and the n-type bismuth telluride thermoelectric material are compounded, so that the n-type bismuth telluride-based thermoelectric material with optimized electrical properties and thermal properties at the same time is obtained.
本发明公开了一种高性能n型碲化铋基热电材料及其制备方法，该热电材料的制备方法包括以下步骤：按化学计量比称取Ag粉和Se粉并混合后得到混合粉体，混合粉体依次经过熔炼处理、球磨处理，得到Ag2Se粉末；将n型Bi2Te3‑xSex粉末和上述制备的Ag2Se粉末混合均匀，经烧结后即得到高性能n型碲化铋基热电材料；所述n型Bi2Te3‑xSex粉末中x取值为0‑1.0。制备出功率因子提升，热导率降低的高性能n型碲化铋基热电材料。本发明通过将纳米Ag2Se材料与n型碲化铋热电材料复合，获得了电学性能和热学性能同时优化的n型碲化铋基热电材料。
High-performance n-type bismuth telluride-based thermoelectric material and preparation method thereof
The invention discloses a high-performance n-type bismuth telluride-based thermoelectric material and a preparation method thereof.The preparation method of the thermoelectric material comprises the following steps that Ag powder and Se powder are weighed according to the stoichiometric ratio and mixed to obtain mixed powder, and the mixed powder is sequentially subjected to smelting treatment and ball milling treatment to obtain Ag2Se powder; and uniformly mixing n-type Bi2Te3-xSex powder and the prepared Ag2Se powder, and sintering to obtain the high-performance n-type bismuth telluride-based thermoelectric material. The value of x in the n-type Bi < 2 > Te < 3-x > Se < x > powder is 0 to 1.0. And the high-performance n-type bismuth telluride-based thermoelectric material with improved power factor and reduced thermal conductivity is prepared. According to the invention, the nano Ag2Se material and the n-type bismuth telluride thermoelectric material are compounded, so that the n-type bismuth telluride-based thermoelectric material with optimized electrical properties and thermal properties at the same time is obtained.
本发明公开了一种高性能n型碲化铋基热电材料及其制备方法，该热电材料的制备方法包括以下步骤：按化学计量比称取Ag粉和Se粉并混合后得到混合粉体，混合粉体依次经过熔炼处理、球磨处理，得到Ag2Se粉末；将n型Bi2Te3‑xSex粉末和上述制备的Ag2Se粉末混合均匀，经烧结后即得到高性能n型碲化铋基热电材料；所述n型Bi2Te3‑xSex粉末中x取值为0‑1.0。制备出功率因子提升，热导率降低的高性能n型碲化铋基热电材料。本发明通过将纳米Ag2Se材料与n型碲化铋热电材料复合，获得了电学性能和热学性能同时优化的n型碲化铋基热电材料。
High-performance n-type bismuth telluride-based thermoelectric material and preparation method thereof
一种高性能n型碲化铋基热电材料及其制备方法
LI DI (Autor:in) / CHEN KE (Autor:in) / LIU MIN (Autor:in) / ZHANG JIAN (Autor:in) / SONG CHUNJUN (Autor:in) / QIN XIAOYING (Autor:in)
31.03.2023
Patent
Elektronische Ressource
Chinesisch
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