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Pb-doped BiCuSeO-based thermoelectric material and step-by-step preparation method
The invention discloses a method for preparing a Pb-doped BiCuSeO-based thermoelectric material step by step, and the method comprises the following steps: synthesizing Bi < 1-x > Pb < x > CuSeO by adopting a thermal explosion method; cu2Se is synthesized by adopting a self-propagating high-temperature synthesis method; according to the stoichiometric ratio of Bi < 1-x > Pb < x > CuSeO <-x > Cu2Se, Bi < 1-x > Pb < x > CuSeO <-x > Cu2Se powder is weighed, the two kinds of powder are evenly mixed, and a Pb-doped BiCuSeO-based thermoelectric block material is synthesized through spark plasma sintering; the method for synthesizing Bi < 1-x > Pb < x > CuSeO by adopting the thermal explosion method specifically comprises the following steps: uniformly mixing Bi powder, Pb powder, CuO powder and Se powder according to a chemical general formula Bi < 1-x > Pb < x > CuSeO ratio, and then carrying out thermal explosion. According to the scheme, the non-uniform interface content in the pressure direction in the spark plasma sintering process can be improved, the lattice heat conductivity can be reduced, and finally the purpose of comprehensively improving the thermoelectric figure of merit (ZT value) of the material is achieved.
本发明公开了一种分步制备Pb掺杂BiCuSeO基热电材料的方法，包括以下步骤，采用热爆法合成Bi1‑xPbxCuSeO；采用自蔓延高温合成法合成Cu2Se；按Bi1‑xPbxCuSeO‑xCu2Se的化学计量比称量Bi1‑xPbxCuSeO和Cu2Se粉末，将两种粉末均匀混合，通过放电等离子烧结合成Pb掺杂BiCuSeO基热电块体材料；所述采用热爆法合成Bi1‑xPbxCuSeO，具体包括，将Bi粉、Pb粉、CuO粉和Se粉，按照化学通式Bi1‑xPbxCuSeO配比，均匀混粉后进行热爆。本发明的方案可以提高放电等离子烧结过程中沿压力方向的非均匀界面含量，可降低晶格热导率，最终达到全面提升材料热电优值(ZT值)的目的。
Pb-doped BiCuSeO-based thermoelectric material and step-by-step preparation method
The invention discloses a method for preparing a Pb-doped BiCuSeO-based thermoelectric material step by step, and the method comprises the following steps: synthesizing Bi < 1-x > Pb < x > CuSeO by adopting a thermal explosion method; cu2Se is synthesized by adopting a self-propagating high-temperature synthesis method; according to the stoichiometric ratio of Bi < 1-x > Pb < x > CuSeO <-x > Cu2Se, Bi < 1-x > Pb < x > CuSeO <-x > Cu2Se powder is weighed, the two kinds of powder are evenly mixed, and a Pb-doped BiCuSeO-based thermoelectric block material is synthesized through spark plasma sintering; the method for synthesizing Bi < 1-x > Pb < x > CuSeO by adopting the thermal explosion method specifically comprises the following steps: uniformly mixing Bi powder, Pb powder, CuO powder and Se powder according to a chemical general formula Bi < 1-x > Pb < x > CuSeO ratio, and then carrying out thermal explosion. According to the scheme, the non-uniform interface content in the pressure direction in the spark plasma sintering process can be improved, the lattice heat conductivity can be reduced, and finally the purpose of comprehensively improving the thermoelectric figure of merit (ZT value) of the material is achieved.
本发明公开了一种分步制备Pb掺杂BiCuSeO基热电材料的方法，包括以下步骤，采用热爆法合成Bi1‑xPbxCuSeO；采用自蔓延高温合成法合成Cu2Se；按Bi1‑xPbxCuSeO‑xCu2Se的化学计量比称量Bi1‑xPbxCuSeO和Cu2Se粉末，将两种粉末均匀混合，通过放电等离子烧结合成Pb掺杂BiCuSeO基热电块体材料；所述采用热爆法合成Bi1‑xPbxCuSeO，具体包括，将Bi粉、Pb粉、CuO粉和Se粉，按照化学通式Bi1‑xPbxCuSeO配比，均匀混粉后进行热爆。本发明的方案可以提高放电等离子烧结过程中沿压力方向的非均匀界面含量，可降低晶格热导率，最终达到全面提升材料热电优值(ZT值)的目的。
Pb-doped BiCuSeO-based thermoelectric material and step-by-step preparation method
一种Pb掺杂BiCuSeO基热电材料及分步制备的方法
JIANG LONG (author) / HAN LIHONG (author) / LU CAIHONG (author) / YANG SHANGYU (author) / WANG HANG (author) / WANG JIANJUN (author) / WANG JIANDONG (author) / SONG SHENGYIN (author) / FENG YAORONG (author) / HUO CHUNYONG (author)
2023-07-07
Patent
Electronic Resource
Chinese
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