Thermoelectric properties of some skutterudite compounds with different grain size
Thermoelectric properties of some skutterudite compounds with different grain size
复制标题
几种不同晶粒尺寸方钴矿化合物的热电性能
DOI：
10.1016/j.jallcom.2003.12.032
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发表时间：
2004-07
影响因子：
6.2
通讯作者：
Zhang L. T.
中科院分区：
文献类型：
--
作者：
Yang L.;Wu J. S.;Zhang L. T.
采用热压法制备了不同平均晶粒尺寸（约0.8、3.9和6.7μm）的铁合金化CoSb 3化合物（LayFe 4 − xCoxSb 12，x=1-3，y=0-0.75），并测量了其从室温到773 K的热电性能。晶粒尺寸对La填充样品的电阻率和塞贝克系数有明显的影响。La填充样品的电阻率随晶粒尺寸的增大而减小，塞贝克系数随晶粒尺寸的增大而增大。而未填充样品的电阻率和塞贝克系数与其晶粒尺寸相对无关。不同于二元CoSb 3，晶格热导率的样品被发现是不敏感的研究范围内的晶粒尺寸。理论分析表明，在这些LayFe 4 − xCoxSb 12化合物中，边界散射对晶格热导率的影响相对弱于CoSb 3.对于La填充的方钴矿化合物，品质因数（ZT）随着晶粒尺寸而增加，表明相对大的晶粒尺寸产生这些化合物的良好热电性能。
Some Fe-alloyed CoSb3compounds (LayFe4−xCoxSb12, with x=1–3 and y=0–0.75) with/without rare-earth element filling with different average grain sizes (about 0.8, 3.9 and 6.7μm) were prepared by hot pressing and their thermoelectric properties were measured from room temperature to 773K. Grain size has an obvious effect on the electrical resistivity and Seebeck coefficient of the La-filled samples. The electrical resistivity decreases and the Seebeck coefficient increases with increasing grain size for the La-filled samples. However, the electrical resistivity and Seebeck coefficient of the unfilled samples are relatively independent of their grain sizes. Unlike binary CoSb3, lattice thermal conductivity of the samples is found to be insensitive to the grain size within the investigated range. Theoretical analysis shows that the effect of boundary scattering on the lattice thermal conductivity in these LayFe4−xCoxSb12compounds is relatively weaker than that in CoSb3. For the La-filled skutterudite compound, the figure of merit (ZT) increases with grain size, indicating that a relatively large grain size yields good thermoelectric properties for these compounds.
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影响因子：
3.2
作者：
D. P. White;P. Klemens
通讯作者：
D. P. White;P. Klemens
影响因子：
3.2
作者：
H. Anno;K. Hatada;H. Shimizu;K. Matsubara;Y. Notohara;T. Sakakibara;H. Tashiro;K. Motoya
通讯作者：
H. Anno;K. Hatada;H. Shimizu;K. Matsubara;Y. Notohara;T. Sakakibara;H. Tashiro;K. Motoya
影响因子：
3.2
作者：
G. Nolas;G. Slack;T. Caillat;G. Meisner
通讯作者：
G. Nolas;G. Slack;T. Caillat;G. Meisner
DOI：
10.1109/ict.1997.667151
发表时间：
1997-08
期刊：
XVI ICT '97. Proceedings ICT'97. 16th International Conference on Thermoelectrics (Cat. No.97TH8291)
影响因子：
--
作者：
H. Nakagawa;H. Tanaka;A. Kasama;H. Anno;K. Matsubara
通讯作者：
H. Nakagawa;H. Tanaka;A. Kasama;H. Anno;K. Matsubara
影响因子：
3.2
作者：
Anno, H;Matsubara, K;Tashiro, H
通讯作者：
Tashiro, H