Thermoelectric properties of Ti0.2Co4Sb11.5Te0.5 prepared by HPHT

Thermoelectric properties of Ti0.2Co4Sb11.5Te0.5 prepared by HPHT
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HPHT制备Ti0.2Co4Sb11.5Te0.5的热电性能

DOI:
10.1016/j.jallcom.2010.11.027
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发表时间:
2011-02
影响因子:
6.2
通讯作者:
Jia, Xiaopeng
Jia, Xiaopeng
中科院分区:
材料科学2区
文献类型:
--
作者:
Deng, Le;Ma, Hongan;Su, Taichao;Jiang, Yiping;Zheng, Shizhao;Jia, Xiaopeng

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采用高压高温法制备了ti0.2 co4sb11.5 te0.5。通过x射线衍射、电子探针分析和热电性能测量对样品进行了表征。ti0.2 co4sb11.5 te0.5的功率因数和优值ZT均随温度升高而增大。与未填充的Co4Sb11.5Te0.5样品相比,在706K温度下获得了更高的ZT值0.702,这与Ti0.2Co4Sb11.5Te0.5具有更高的功率因数有关。结果表明,高温高温法制备ti填充CoSb3是提高CoSb3热电性能的有效方法。
Ti0.2Co4Sb11.5Te0.5has been prepared successfully by high pressure and high-temperature (HPHT) method. The samples were characterized by X-ray diffraction, electron microprobe analysis, and thermoelectric properties measurements. The power factor and the figure of merit, ZT, of Ti0.2Co4Sb11.5Te0.5all increased with the increasing temperature. Comparing with the sample of unfilled Co4Sb11.5Te0.5, a higher ZT value of 0.702 was obtained at the temperature of 706K, which was related to the higher power factor of Ti0.2Co4Sb11.5Te0.5. The results indicated that Ti-filled CoSb3prepared by HPHT is an effective method to enhance the thermoelectric properties of CoSb3.
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