Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for simply synthesizing bismuth trisulfide-graphene oxide composite thermoelectric material
The invention discloses a method for simply synthesizing a bismuth trisulfide-graphene oxide composite thermoelectric material, which comprises the following steps: adding a proper amount of graphene oxide (GO) into a bismuth nitrate solution, uniformly stirring, then respectively adding a thiosemicarbazide solution and a urea solution for hydrothermal reaction, and finally sintering by using a tubular furnace to obtain the Bi2S3-GO composite thermoelectric material. GO exists in a Bi2S3 matrix as a second phase, so that the thermal conductivity of the Bi2S3 matrix material can be remarkably reduced, and the thermoelectric figure of merit of the Bi2S3 matrix material is improved. According to the invention, a simple hydrothermal synthesis technology and a tubular sintering technology are combined to prepare the composite thermoelectric material with low thermal conductivity. The Bi2S3-based thermoelectric material has the characteristics of no toxicity, low price and the like, and the doped Bi2S3-GO composite nanomaterial shows excellent thermoelectric performance and shows wide application prospects in the field of medium-temperature zone thermoelectric materials.
本发明公开一种简单合成三硫化二铋‑氧化石墨烯复合热电材料的方法，在硝酸铋溶液中加入适量氧化石墨烯（GO）在搅拌均匀，之后分别加入氨基硫脲溶液和尿素溶液进行水热反应，最后利用管式炉烧结得到Bi2S3‑GO复合热电材料。GO作为第二相存在于Bi2S3基体中会显著降低Bi2S3基体材料的热导率，提升其热电优值。本发明将简单的水热合成技术和管式烧结技术相结合，制备了一种热导率较低的复合热电材料。Bi2S3基热电材料具有无毒、价格低廉等特点，经过掺杂以后的Bi2S3‑GO复合纳米材料显示出优异的热电性能，在中温区热电材料领域展现出广泛的应用前景。
Method for simply synthesizing bismuth trisulfide-graphene oxide composite thermoelectric material
The invention discloses a method for simply synthesizing a bismuth trisulfide-graphene oxide composite thermoelectric material, which comprises the following steps: adding a proper amount of graphene oxide (GO) into a bismuth nitrate solution, uniformly stirring, then respectively adding a thiosemicarbazide solution and a urea solution for hydrothermal reaction, and finally sintering by using a tubular furnace to obtain the Bi2S3-GO composite thermoelectric material. GO exists in a Bi2S3 matrix as a second phase, so that the thermal conductivity of the Bi2S3 matrix material can be remarkably reduced, and the thermoelectric figure of merit of the Bi2S3 matrix material is improved. According to the invention, a simple hydrothermal synthesis technology and a tubular sintering technology are combined to prepare the composite thermoelectric material with low thermal conductivity. The Bi2S3-based thermoelectric material has the characteristics of no toxicity, low price and the like, and the doped Bi2S3-GO composite nanomaterial shows excellent thermoelectric performance and shows wide application prospects in the field of medium-temperature zone thermoelectric materials.
本发明公开一种简单合成三硫化二铋‑氧化石墨烯复合热电材料的方法，在硝酸铋溶液中加入适量氧化石墨烯（GO）在搅拌均匀，之后分别加入氨基硫脲溶液和尿素溶液进行水热反应，最后利用管式炉烧结得到Bi2S3‑GO复合热电材料。GO作为第二相存在于Bi2S3基体中会显著降低Bi2S3基体材料的热导率，提升其热电优值。本发明将简单的水热合成技术和管式烧结技术相结合，制备了一种热导率较低的复合热电材料。Bi2S3基热电材料具有无毒、价格低廉等特点，经过掺杂以后的Bi2S3‑GO复合纳米材料显示出优异的热电性能，在中温区热电材料领域展现出广泛的应用前景。
Method for simply synthesizing bismuth trisulfide-graphene oxide composite thermoelectric material
一种简单合成三硫化二铋-氧化石墨烯复合热电材料的方法
TAN HONGLIN (Autor:in) / BAI YAONING (Autor:in) / LI XINRU (Autor:in) / OUYANG TAOYUAN (Autor:in) / YAN YUWEI (Autor:in) / WANG ZICHEN (Autor:in)
04.11.2022
Patent
Elektronische Ressource
Chinesisch
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