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Bismuth telluride-based thermoelectric material containing carbon dots and preparation method thereof
The invention relates to a preparation method of a bismuth telluride-based thermoelectric material containing carbon dots, and belongs to the field of clean energy. The preparation method comprises the following steps: (a) proportioning raw materials BiCl3 or Bi powder, SbCl3 or Sb powder, Se powder and Te powder according to an atomic molar ratio according to Bi (2-x) SbxSeyTe3-y (0 < = x < = 2 and 0 < = y < = 3), then adding a proper amount of SDBS, NaOH, NaBH4 and deionized water, mixing, putting into a reaction kettle lining, stirring for 0.5-2 hours, then adding CDs powder, and stirring for 5-30 minutes; (b) keeping the temperature of the reaction kettle at 150-200 DEG C for 12-24 hours; (c) carrying out suction filtration on the suspension obtained after the reaction is finished for multiple times, and drying the obtained solid at 50-150 DEG C for 3-10 hours to obtain powder; and (d) carrying out hot pressing on the powder for 10-30 minutes at the pressure of 40-65 MPa and the temperature of 400-550 DEG C to obtain a corresponding block, namely the bismuth telluride-based thermoelectric material containing the carbon dots. According to the bismuth telluride-based thermoelectric material containing the carbon dots, the thermoelectric figure of merit of the material can be improved, and the energy utilization efficiency is improved.
本发明涉及一种含碳点的碲化铋基热电材料的制备方法，属于清洁能源领域。该制备方法包括以下步骤：（a）按照Bi2‑xSbxSeyTe3‑y，其中0≤x≤2，0≤y≤3，将原料BiCl3或Bi粉、SbCl3或Sb粉、Se粉、Te粉，按照原子摩尔比配比，然后加入适量SDBS、NaOH、NaBH4与去离子水混合放入反应釜内衬中，搅拌0.5‑2h，再添加CDs粉，再搅拌5‑30min；（b）将反应釜在150‑200℃保温12‑24h；（c）将反应结束得到的悬浮液多次抽滤，所得固体在50‑150℃干燥3‑10h，得到粉末；（d）将粉末在40‑65MPa，400‑550℃下进行热压10‑30min，得到相应的块体，即含碳点的碲化铋基热电材料。本发明制备的含碳点的碲化铋基热电材料能够提高材料的热电优值，提高能源利用效率。
Bismuth telluride-based thermoelectric material containing carbon dots and preparation method thereof
The invention relates to a preparation method of a bismuth telluride-based thermoelectric material containing carbon dots, and belongs to the field of clean energy. The preparation method comprises the following steps: (a) proportioning raw materials BiCl3 or Bi powder, SbCl3 or Sb powder, Se powder and Te powder according to an atomic molar ratio according to Bi (2-x) SbxSeyTe3-y (0 < = x < = 2 and 0 < = y < = 3), then adding a proper amount of SDBS, NaOH, NaBH4 and deionized water, mixing, putting into a reaction kettle lining, stirring for 0.5-2 hours, then adding CDs powder, and stirring for 5-30 minutes; (b) keeping the temperature of the reaction kettle at 150-200 DEG C for 12-24 hours; (c) carrying out suction filtration on the suspension obtained after the reaction is finished for multiple times, and drying the obtained solid at 50-150 DEG C for 3-10 hours to obtain powder; and (d) carrying out hot pressing on the powder for 10-30 minutes at the pressure of 40-65 MPa and the temperature of 400-550 DEG C to obtain a corresponding block, namely the bismuth telluride-based thermoelectric material containing the carbon dots. According to the bismuth telluride-based thermoelectric material containing the carbon dots, the thermoelectric figure of merit of the material can be improved, and the energy utilization efficiency is improved.
本发明涉及一种含碳点的碲化铋基热电材料的制备方法，属于清洁能源领域。该制备方法包括以下步骤：（a）按照Bi2‑xSbxSeyTe3‑y，其中0≤x≤2，0≤y≤3，将原料BiCl3或Bi粉、SbCl3或Sb粉、Se粉、Te粉，按照原子摩尔比配比，然后加入适量SDBS、NaOH、NaBH4与去离子水混合放入反应釜内衬中，搅拌0.5‑2h，再添加CDs粉，再搅拌5‑30min；（b）将反应釜在150‑200℃保温12‑24h；（c）将反应结束得到的悬浮液多次抽滤，所得固体在50‑150℃干燥3‑10h，得到粉末；（d）将粉末在40‑65MPa，400‑550℃下进行热压10‑30min，得到相应的块体，即含碳点的碲化铋基热电材料。本发明制备的含碳点的碲化铋基热电材料能够提高材料的热电优值，提高能源利用效率。
Bismuth telluride-based thermoelectric material containing carbon dots and preparation method thereof
一种含碳点的碲化铋基热电材料及其制备方法
SONG HONGZHANG (Autor:in) / LIU XIN (Autor:in) / CAO RUIJUAN (Autor:in) / TIAN ZENGGUO (Autor:in) / SONG XIAOHUI (Autor:in) / ZHAO HUADONG (Autor:in) / ZHANG YINGJIU (Autor:in)
29.12.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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