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BiSbTe-based nano composite material with high ZT value and preparation method and application of BiSbTe-based nano composite material
The invention provides a preparation method of a BiSbTe-based nano composite material with a high ZT value, which comprises the following steps: grinding Bi powder, Sb powder, Te powder and SiC powder in a ball mill, and then carrying out spark plasma sintering to obtain a block Bi0. 3Sb1. 7Te3 + xvol% SiC, where x is equal to 0.1, 0.4 or 0.6. According to the preparation method disclosed by the invention, the SiC nanoparticles are dispersed into the BiSbTe matrix, so that the thermoelectric performance can be effectively improved. In the nano composite material prepared by the method, SiC nano particles and a Bi < 0.3 > Sb < 1.7 > Te3 matrix form a coherent interface, the conductivity and the Seebeck coefficient are improved at the same time, the thermal conductivity is reduced by enhancing phonon scattering, the SiC nano particles further endow the BiSbTe material with excellent mechanical properties, and practical application and device preparation are facilitated.
本发明提出了一种高ZT值的BiSbTe基纳米复合材料的制备方法，包括如下步骤：将Bi粉末、Sb粉末、Te粉末和SiC粉末在球磨机中研磨后进行放电等离子烧结，得到块体Bi0.3Sb1.7Te3+xvol％SiC，其中，x＝0.1，0.4或0.6。本发明的制备方法，将SiC纳米粒子分散入BiSbTe基体中能够有效提高热电性能。本发明制备的纳米复合材料中，SiC纳米粒子与Bi0.3Sb1.7Te3基体形成了共格界面，同时提高了电导率和Seebeck系数，同时通过增强声子散射降低了热导率，SiC纳米粒子进一步赋予BiSbTe材料优秀的机械性能，有利于实际应用和器件制备。
BiSbTe-based nano composite material with high ZT value and preparation method and application of BiSbTe-based nano composite material
The invention provides a preparation method of a BiSbTe-based nano composite material with a high ZT value, which comprises the following steps: grinding Bi powder, Sb powder, Te powder and SiC powder in a ball mill, and then carrying out spark plasma sintering to obtain a block Bi0. 3Sb1. 7Te3 + xvol% SiC, where x is equal to 0.1, 0.4 or 0.6. According to the preparation method disclosed by the invention, the SiC nanoparticles are dispersed into the BiSbTe matrix, so that the thermoelectric performance can be effectively improved. In the nano composite material prepared by the method, SiC nano particles and a Bi < 0.3 > Sb < 1.7 > Te3 matrix form a coherent interface, the conductivity and the Seebeck coefficient are improved at the same time, the thermal conductivity is reduced by enhancing phonon scattering, the SiC nano particles further endow the BiSbTe material with excellent mechanical properties, and practical application and device preparation are facilitated.
本发明提出了一种高ZT值的BiSbTe基纳米复合材料的制备方法，包括如下步骤：将Bi粉末、Sb粉末、Te粉末和SiC粉末在球磨机中研磨后进行放电等离子烧结，得到块体Bi0.3Sb1.7Te3+xvol％SiC，其中，x＝0.1，0.4或0.6。本发明的制备方法，将SiC纳米粒子分散入BiSbTe基体中能够有效提高热电性能。本发明制备的纳米复合材料中，SiC纳米粒子与Bi0.3Sb1.7Te3基体形成了共格界面，同时提高了电导率和Seebeck系数，同时通过增强声子散射降低了热导率，SiC纳米粒子进一步赋予BiSbTe材料优秀的机械性能，有利于实际应用和器件制备。
BiSbTe-based nano composite material with high ZT value and preparation method and application of BiSbTe-based nano composite material
高ZT值的BiSbTe基纳米复合材料及其制备方法和应用
LIU FENGMING (author) / LI JINGFENG (author) / CAI BOWEN (author)
2022-12-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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