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P-type CaMg2Sb2-based thermoelectric material and preparation method thereof
The invention discloses a p-type CaMg2Sb2-based thermoelectric material and a preparation method thereof, and belongs to the field of new energy materials, the chemical composition of the CaMg2Sb2-based thermoelectric material is Ca1-x-yYbxLiyMg2-zCdzSb2, x is greater than 0 and less than 0.7, y is greater than 0 and less than 0.03, and z is greater than 0 and less than or equal to 0.5; according to the preparation method, high-energy ball milling and spark plasma sintering are adopted for preparation; according to the p-type CaMg2Sb2-based thermoelectric material provided by the invention, the carrier concentration and mobility of the material are remarkably improved by adopting co-doping of Yb, Li and Cd, the lattice thermal conductivity of the material is reduced, and the highest ZT of the material is 0.9-1.1; the preparation of the p-type CaMg2Sb2-based thermoelectric material with high carrier concentration and high mobility is realized, and the thermoelectric performance of the p-type CaMg2Sb2-based thermoelectric material is remarkably improved.
本发明公开了一种p型CaMg2Sb2基热电材料及其制备方法，属于新能源材料领域，所述CaMg2Sb2基热电材料的化学组成为：Ca1‑x‑yYbxLiyMg2‑zCdzSb2，其中，0＜x＜0.7，0＜y＜0.03，0＜z≤0.5；其制备方法为采用高能球磨加放电等离子烧结制备；本发明提供的p型CaMg2Sb2基热电材料，采用Yb、Li、Cd共掺杂显著提高了材料的载流子浓度和迁移率，并降低了材料的晶格热导率，材料的最高ZT在0.9～1.1；本发明实现了高载流子浓度和高迁移率的p型CaMg2Sb2基热电材料的制备，其热电性能显著提高。
P-type CaMg2Sb2-based thermoelectric material and preparation method thereof
The invention discloses a p-type CaMg2Sb2-based thermoelectric material and a preparation method thereof, and belongs to the field of new energy materials, the chemical composition of the CaMg2Sb2-based thermoelectric material is Ca1-x-yYbxLiyMg2-zCdzSb2, x is greater than 0 and less than 0.7, y is greater than 0 and less than 0.03, and z is greater than 0 and less than or equal to 0.5; according to the preparation method, high-energy ball milling and spark plasma sintering are adopted for preparation; according to the p-type CaMg2Sb2-based thermoelectric material provided by the invention, the carrier concentration and mobility of the material are remarkably improved by adopting co-doping of Yb, Li and Cd, the lattice thermal conductivity of the material is reduced, and the highest ZT of the material is 0.9-1.1; the preparation of the p-type CaMg2Sb2-based thermoelectric material with high carrier concentration and high mobility is realized, and the thermoelectric performance of the p-type CaMg2Sb2-based thermoelectric material is remarkably improved.
本发明公开了一种p型CaMg2Sb2基热电材料及其制备方法，属于新能源材料领域，所述CaMg2Sb2基热电材料的化学组成为：Ca1‑x‑yYbxLiyMg2‑zCdzSb2，其中，0＜x＜0.7，0＜y＜0.03，0＜z≤0.5；其制备方法为采用高能球磨加放电等离子烧结制备；本发明提供的p型CaMg2Sb2基热电材料，采用Yb、Li、Cd共掺杂显著提高了材料的载流子浓度和迁移率，并降低了材料的晶格热导率，材料的最高ZT在0.9～1.1；本发明实现了高载流子浓度和高迁移率的p型CaMg2Sb2基热电材料的制备，其热电性能显著提高。
P-type CaMg2Sb2-based thermoelectric material and preparation method thereof
一种p型CaMg2Sb2基热电材料及其制备方法
GUO MUCHUN (author) / CHEN HONG (author) / SUN CHENYUE (author) / ZHANG QINYONG (author)
2024-10-29
Patent
Electronic Resource
Chinese
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