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Applied Sciences
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Recent Progress in the Development of Thermoelectric Materials
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Recent Progress in the Development of Thermoelectric Materials

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Materials Science and Engineering".

Deadline for manuscript submissions: closed (28 February 2018) | Viewed by 10382

Special Issue Editor

Prof. Dr. Bertrand Lenoir

E-Mail Website
Guest Editor
Institut Jean Lamour, UMR 7198 CNRS, Université de Lorraine, Parc de Saurupt, CS 50840, 54011 Nancy, France
Interests: thermoelectric materials; electrical properties; thermal properties; small-band gap semiconductors; thermoelectric conversion
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Research activities in the field of thermoelectricity have attracted increasing attention these last few years due to the unique role that this technology could play in generating useful electricity from the recovery of waste heat or to cool optoelectronic components or passenger seats in automobile. Tremendous effort was produced to develop advanced thermoelectric materials including inorganic, organic or composite materials prepared in the bulk or nanostructured forms. These developments were driven by the proposal of new concepts and approaches and the emergence of novel synthesis routes. Many new families of materials have been identified and investigated leading to consequent improvements compared to the state-of-the-art. The goal of this Special Issue is to highlight some of the latest research results on the physics and chemistry of these new families of thermoelectric materials. We invite researchers to contribute to review articles as well original papers that will serve to the continuous efforts to understand how the crystalline structure, composition or nano-structuration can influence beneficially the thermoelectric properties. Potential topics include, but are not limited to:

  • inorganic thermoelectric materials,
  • organic thermoelectric materials,
  • nanostructured thermoelectric materials
  • composite thermoelectric materials

Prof. Dr. Bertrand Lenoir
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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Keywords

  • Thermoelectricity
  • Solid state energy conversion
  • Transport properties
  • Synthesis
  • Electrical properties
  • Thermal properties
  • Material

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Published Papers (2 papers)

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Research

18 pages, 15413 KiB  
Article
Thermal Stability and Tuning of Thermoelectric Properties of Ag1−xSb1+xTe2+x (0 ≤ x ≤ 0.4) Alloys
by Paweł Wyżga, Igor Veremchuk, Ulrich Burkhardt, Paul Simon, Yuri Grin and Krzysztof T. Wojciechowski
Appl. Sci. 2018, 8(1), 52; https://doi.org/10.3390/app8010052 - 4 Jan 2018
Cited by 10 | Viewed by 4317
Abstract
Introduction of nonstoichiometry to AgSbTe2-based materials is considered to be an effective way to tune thermoelectric properties similarly to extrinsic doping. To prove this postulate, a systematic physicochemical study of the Ag1−xSb1+xTe2+x alloys [...] Read more.
Introduction of nonstoichiometry to AgSbTe2-based materials is considered to be an effective way to tune thermoelectric properties similarly to extrinsic doping. To prove this postulate, a systematic physicochemical study of the Ag1−xSb1+xTe2+x alloys (0 ≤ x ≤ 0.4) was performed. In order to investigate the influence of the cooling rate after synthesis on phase composition and thermoelectric performance, slowly cooled and quenched Ag1−xSb1+xTe2+x alloys (x = 0; 0.1; 0.17; 0.19; 0.3; 0.4) were prepared. Single-phase material composed of the β phase (NaCl structure type) was obtained for the quenched x = 0.19 sample only. The other alloys must be regarded as multi-phase materials. The cooling rate affects the formation of the phases in the Ag-Sb-Te system and influences mainly electronic properties, carrier mobility and carrier concentration. The extremely low lattice thermal conductivity is an effect of the mosaic nanostructure. The maximal value of the figure of merit ZTmax = 1.2 is observed at 610 K for the slowly cooled multi-phase sample Ag0.9Sb1.1Te2.1. Thermoelectric properties are repeatedly reproducible up to 490 K. Full article
(This article belongs to the Special Issue Recent Progress in the Development of Thermoelectric Materials)
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5392 KiB  
Article
Synthesis and Thermoelectric Properties of TiO2/Cu2SnSe3 Composites
by Jiai Ning, Di Wu and Degang Zhao
Appl. Sci. 2017, 7(10), 1043; https://doi.org/10.3390/app7101043 - 12 Oct 2017
Cited by 20 | Viewed by 5242
Abstract
Thermoelectric (TE) materials are a kind of energy material which can directly convert waste heat into electricity based on TE effects. Ternary Cu2SnSe3 material with diamond-like structure has become one of the potential TE materials due to its low thermal [...] Read more.
Thermoelectric (TE) materials are a kind of energy material which can directly convert waste heat into electricity based on TE effects. Ternary Cu2SnSe3 material with diamond-like structure has become one of the potential TE materials due to its low thermal conductivity and adjustable electrical conductivity. In this study, the Cu2SnSe3 powder was prepared by vacuum melting-quenching-annealing-grinding process. The nano-TiO2 particles were introduced into the Cu2SnSe3 matrix by ball milling. Spark plasma sintering (SPS) was employed to fabricate the TiO2/Cu2SnSe3 composites. The X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and transmission electron microscopy (TEM) were used to study the phase and microstructure of TiO2/Cu2SnSe3 composites. Electrical resistivity, Seebeck coefficient, and thermal conductivity measurement were applied to analyze the thermoelectric properties. For the 1.4%TiO2/Cu2SnSe3 composite, the electrical conductivity was improved whereas the Seebeck coefficient was lower than that of pure Cu2SnSe3. For other TiO2/Cu2SnSe3 samples, the Seebeck coefficient was improved while the electrical conductivity was reduced. The thermal conductivity of TiO2/Cu2SnSe3 composites was lower than that of Cu2SnSe3 matrix, which is attributed to the lower carrier conductivity. A maximum ZT of 0.30 at 700 K for the 1.0%TiO2/Cu2SnSe3 composite was obtained, which was 17% higher than that of the pure Cu2SnSe3 at 700 K. Full article
(This article belongs to the Special Issue Recent Progress in the Development of Thermoelectric Materials)
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