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Method for preparing P-type Bi2Te3-based thermoelectric material by recovering waste tellurium-bismuth alloy crystal bars
The invention belongs to the technical field of thermoelectric materials, and discloses a method for preparing a P-type Bi2Te3-based thermoelectric material by recycling a waste tellurium-bismuth alloy crystal bar. The preparation method comprises the following steps: cleaning and drying a waste tellurium-bismuth alloy crystal bar with the theoretical composition of Bi < x > Sb < 2-x > Te3 (x = 0.32-0.48), then testing the conductivity and Seebeck coefficient of the waste tellurium-bismuth alloy crystal bar, comparing standard samples with different Bi contents, and reversely speculating the Bi content range value of the tellurium-bismuth alloy sample; the method comprises the following steps: theoretically calculating waste tellurium-bismuth alloy bars with Bi contents in different ranges into an optimal proportion by taking Bi content x = 0.40 as a reference, and combining the waste tellurium-bismuth alloy bars to re-smelt, cold-quench, crush, screen and hot-press sinter to obtain an alloy ingot, thereby obtaining the high-performance P-type Bi2Te3-based thermoelectric material. According to the method, the high-performance thermoelectric material crystal bar is prepared again by adopting the waste tellurium-bismuth alloy crystal bar and adjusting the component proportion through the complementary crystal bar, and the method has the advantages of being low in production cost and high in waste recycling rate.
本发明属于热电材料技术领域，公开了一种回收废碲铋合金晶棒制备P型Bi2Te3基热电材料的方法。所述制备方法为：将理论组成为BixSb2‑xTe3，x＝0.32～0.48的废碲铋合金晶棒经清洗烘干，然后测试其电导率和塞贝克系数，对比不同Bi含量的标准样品，反向推测出该碲铋合金试样的Bi含量范围值；以Bi含量x＝0.40为基准，将Bi含量在不同范围内的废碲铋合金棒理论计算成最优比例，组合重新进行熔炼冷淬、粉碎筛分、热压烧结成合金锭，得到高性能的P型Bi2Te3基热电材料。本发明采用废碲铋合金晶棒通过互补晶棒调整成分比例，再次制备出高性能热电材料晶棒，具有生产成本低、废料回收利用率高的优势。
Method for preparing P-type Bi2Te3-based thermoelectric material by recovering waste tellurium-bismuth alloy crystal bars
The invention belongs to the technical field of thermoelectric materials, and discloses a method for preparing a P-type Bi2Te3-based thermoelectric material by recycling a waste tellurium-bismuth alloy crystal bar. The preparation method comprises the following steps: cleaning and drying a waste tellurium-bismuth alloy crystal bar with the theoretical composition of Bi < x > Sb < 2-x > Te3 (x = 0.32-0.48), then testing the conductivity and Seebeck coefficient of the waste tellurium-bismuth alloy crystal bar, comparing standard samples with different Bi contents, and reversely speculating the Bi content range value of the tellurium-bismuth alloy sample; the method comprises the following steps: theoretically calculating waste tellurium-bismuth alloy bars with Bi contents in different ranges into an optimal proportion by taking Bi content x = 0.40 as a reference, and combining the waste tellurium-bismuth alloy bars to re-smelt, cold-quench, crush, screen and hot-press sinter to obtain an alloy ingot, thereby obtaining the high-performance P-type Bi2Te3-based thermoelectric material. According to the method, the high-performance thermoelectric material crystal bar is prepared again by adopting the waste tellurium-bismuth alloy crystal bar and adjusting the component proportion through the complementary crystal bar, and the method has the advantages of being low in production cost and high in waste recycling rate.
本发明属于热电材料技术领域，公开了一种回收废碲铋合金晶棒制备P型Bi2Te3基热电材料的方法。所述制备方法为：将理论组成为BixSb2‑xTe3，x＝0.32～0.48的废碲铋合金晶棒经清洗烘干，然后测试其电导率和塞贝克系数，对比不同Bi含量的标准样品，反向推测出该碲铋合金试样的Bi含量范围值；以Bi含量x＝0.40为基准，将Bi含量在不同范围内的废碲铋合金棒理论计算成最优比例，组合重新进行熔炼冷淬、粉碎筛分、热压烧结成合金锭，得到高性能的P型Bi2Te3基热电材料。本发明采用废碲铋合金晶棒通过互补晶棒调整成分比例，再次制备出高性能热电材料晶棒，具有生产成本低、废料回收利用率高的优势。
Method for preparing P-type Bi2Te3-based thermoelectric material by recovering waste tellurium-bismuth alloy crystal bars
一种回收废碲铋合金晶棒制备P型Bi2Te3基热电材料的方法
QIU JIN (author) / CAI XINZHI (author) / FENG LIAO (author) / TONG PEIYUN (author)
2024-09-10
Patent
Electronic Resource
Chinese
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