Journal ArticleDOI
Realizing high thermoelectric performance in Te nanocomposite through Sb2Te3 incorporation
Heng Quan Yang,Yong Jin Chen,Xiao Yang Wang,Lei Miao,Xiao Yan Li,Xiaodong Han,Xu Lu,Guo Yu Wang,Xiao Yuan Zhou +8 more
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TLDR
In this paper, a scalable bottom-up nanostructured Te-Sb2Te3 composites with significantly enhanced thermoelectric performance through a scalable, bottomup method followed by a rapid sintering process was reported.Abstract:
The rational design and fabrication of nanostructures has become a fashionable strategy for pursing high thermoelectric performance in solid-state materials. Here we report nanostructured Te–Sb2Te3 composites with significantly enhanced thermoelectric performance through a scalable bottom-up method followed by a rapid sintering process. The power factor along with the carrier concentration could be significantly enhanced by increasing the number of point defects of . Meanwhile, a great number of boundaries and hetero-interfaces between the Te and Sb2Te3 nanoparticles could play an important role in blocking phonons, resulting in the evident suppression of lattice thermal conductivity. Ultimately, a highest zT value close to 1.0 could be achieved at 623 K in samples with components of 2.6 mol% Sb2Te3 and 97.4 mol% Te. Such a peak zT value is comparable to that of doped Te materials synthesized by the conventional solid-state reaction process. This work reveals that high thermoelectric performance could be realized in an intentionally designed nanocomposite by synergistically improving the power factor and suppressing the lattice thermal conductivity.read more
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Thermoelectric properties of semiconductor-metal composites produced by particle blending
Yu Liu,Doris Cadavid,Maria Ibanez Sabate,Silvia Ortega,Sara Márti Sánchez,Oleksander Dobrozhan,Maksym V. Kovalenko,Jordi Arbiol,Andreu Cabot +8 more
TL;DR: In this article, the thermal and electrical transport properties of PbS-metal composites produced by a versatile particle blending procedure were investigated, and where the metal work function allowed injecting electrons to the intrinsic PBS host.
Journal ArticleDOI
Thermoelectric Properties and Low-Energy Carrier Filtering by Mo Microparticle Dispersion in an n-Type (CuI)0.003Bi2(Te,Se)3 Bulk Matrix.
TL;DR: It is confirmed that micro-sized Mo particles are dispersed homogeneously in the (CuI)0.7Se0.3 matrix without doping, and the high ZT value above 1.0 at room temperature, which is a high level in n-type thermoelectric room temperature applications.
Journal ArticleDOI
Sn vacancy engineering for enhancing the thermoelectric performance of two-dimensional SnS
Heng Quan Yang,Xiao Yang Wang,Hong Wu,Bin Zhang,Dan Dan Xie,Yong Jin Chen,Xu Lu,Xiaodong Han,Lei Miao,Xiao Yuan Zhou +9 more
TL;DR: In this paper, a cationic lattice site vacancy engineering strategy was proposed to tune the hole concentration of two-dimensional polycrystalline SnS in a wide range of 1016-1019 cm−3 by simply changing the molar ratio of raw materials.
Journal ArticleDOI
Towards Antimonene and 2D Antimony Telluride through Electrochemical Exfoliation
TL;DR: In this paper, micrometer-sized few-to-multilayered sheets of Sb and Sb2 Te3 have been obtained by electrochemical exfoliation, where the layered rhombohedral Sb was exfoliated in Na2 SO4 and Li2 SO 4 electrolytes by anodic-cationic intercalation, and the layered Sb 2 Te3 was removed in Na 2 SO4.
Journal ArticleDOI
Enhancing the average thermoelectric figure of merit of elemental Te by suppressing grain boundary scattering
TL;DR: In this article, the grain size of Te0.94Se0.04As0.02 alloys was increased by increasing grain size to achieve an improvement in the TE performance.
References
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Journal ArticleDOI
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Younan Xia,Peidong Yang,Yugang Sun,Yiying Wu,Brian Mayers,Byron D. Gates,Yadong Yin,Franklin Kim,Haoquan Yan +8 more
TL;DR: A comprehensive review of 1D nanostructures can be found in this article, where the authors provide a comprehensive overview of current research activities that concentrate on one-dimensional (1D) nanostructure (wires, rods, belts and tubes).
Journal ArticleDOI
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TL;DR: Thermoelectric materials are solid-state energy converters whose combination of thermal, electrical, and semiconductor properties allows them to be used to convert waste heat into electricity or electrical power directly into cooling and heating.
BookDOI
Transmission Electron Microscopy
TL;DR: The client would like to get a larger, approximately 3 cm in diameter, well fixed tissue sample, together with a detailed report of the clinical presentation, gross, and microscopic lesions, along with the submission of samples prepared in a similar manner by the client for processing.
Journal ArticleDOI
High-performance bulk thermoelectrics with all-scale hierarchical architectures
Kanishka Biswas,Jiaqing He,Ivan Blum,Ivan Blum,Chun I. Wu,Timothy P. Hogan,Timothy P. Hogan,David N. Seidman,Vinayak P. Dravid,Mercouri G. Kanatzidis,Mercouri G. Kanatzidis +10 more
TL;DR: It is shown that heat-carrying phonons with long mean free paths can be scattered by controlling and fine-tuning the mesoscale architecture of nanostructured thermoelectric materials, and an increase in ZT beyond the threshold of 2 highlights the role of, and need for, multiscale hierarchical architecture in controlling phonon scattering in bulk thermoeLECTrics.
Journal ArticleDOI
New Directions for Low-Dimensional Thermoelectric Materials**
Mildred S. Dresselhaus,Gang Chen,Ming Y. Tang,Ronggui Yang,Hohyun Lee,Dezhi Wang,Zhifeng Ren,Jean-Pierre Fleurial,Pawan Gogna +8 more
TL;DR: In this article, the ability to achieve a simultaneous increase in the power factor and a decrease in the thermal conductivity of the same nanocomposite sample and for transport in the same direction is discussed.