Hierarchically structured TiO2 for Ba-filled skutterudite with enhanced thermoelectric performance
Hierarchically structured TiO2 for Ba-filled skutterudite with enhanced thermoelectric performance
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具有增强热电性能的 Ba 填充方钴矿的分级结构 TiO2
DOI:
10.1039/c4ta05285d
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发表时间:
2014-11
影响因子:
11.9
通讯作者:
C.Uher
中科院分区:
文献类型:
--
作者:
H.Chi;G.Y.Wang;Q.F.Zhang;C.Q.Chen;T.Thompson;J. Sakamoto;V.P. Dravid;G.Z Cao;C.Uher
The influence of hierarchical TiO2 inclusions on electrical and thermal transport properties has been investigated in the Ba-filled skutterudite compound Ba0.3Co4Sb12 synthesized by ball milling followed by hot pressing. The hierarchical TiO2, with the morphology of nanocrystallite aggregates, was prepared using a carbon sphere-templated method. It was found that TiO2 inclusions strongly enhance the Seebeck coefficient while they weakly degrade the electric conductivity. In addition, TiO2 inclusions reduce significantly the lattice thermal conductivity through all-scale length phonon scattering due to the hierarchically-structured TiO2 particles. ZT values up to 1.2 were obtained for Ba0.3Co4Sb12 with an optimal amount and dispersion of TiO2 inclusions. These observations demonstrate an exciting scientific opportunity to raise the figure-of-merit of filled skutterudites via hierarchical dispersion.
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影响因子:
1.6
作者:
J. Salvador;Jiong Yang;Xun Shi;Hsiu‐Wen Wang;A. Wereszczak;H. Kong;C. Uher
通讯作者:
J. Salvador;Jiong Yang;Xun Shi;Hsiu‐Wen Wang;A. Wereszczak;H. Kong;C. Uher
影响因子:
64.8
作者:
Biswas, Kanishka;He, Jiaqing;Kanatzidis, Mercouri G.
通讯作者:
Kanatzidis, Mercouri G.
影响因子:
3.2
作者:
F. Brochin;B. Lenoir;X. Devaux;R. Martin-Lopez;H. Scherrer
通讯作者:
F. Brochin;B. Lenoir;X. Devaux;R. Martin-Lopez;H. Scherrer
影响因子:
4
作者:
Li, Han;Tang, Xinfeng;Uher, Ctirad
通讯作者:
Uher, Ctirad
影响因子:
19
作者:
Qiu, Yuting;Xi, Lili;Snyder, G. Jeffrey
通讯作者:
Snyder, G. Jeffrey