Exceeding the filling fraction limit in CoSb3 skutterudite: multi-role chemistry of praseodymium leading to promising thermoelectric performance

2014 ◽  
Vol 2 (23) ◽  
pp. 8933-8940 ◽  
Author(s):  
J. W. Graff ◽  
X. Zeng ◽  
A. M. Dehkordi ◽  
J. He ◽  
T. M. Tritt
Keyword(s):  
Thermoelectric Properties ◽  
State Of The Art ◽  
Thermoelectric Performance ◽  
Filling Fraction ◽  
Filled Skutterudite

Purposefully exceeding the FFL of the previously uninvestigated Pr-filled Co4Sb12 system resulting in state-of-the-art thermoelectric properties for the single-filled skutterudite.

scholarly journals Structural Properties and Thermoelectric Performance of the Double-Filled Skutterudite (Sm,Gd)y(FexNi1-x)4Sb12

Materials ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2451 ◽  
Author(s):  
Cristina Artini ◽  
Riccardo Carlini ◽  
Roberto Spotorno ◽  
Fainan Failamani ◽  
Takao Mori ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Properties ◽  
Mass Difference ◽  
Small Mass ◽  
Thermoelectric Performance ◽  
Filling Fraction ◽  
Filled Skutterudite ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Ionic Size

The structural and thermoelectric properties of the filled skutterudite (Sm,Gd)y(FexNi1-x)4Sb12 were investigated and critically compared to the ones in the Sm-containing system with the aim of unravelling the effect of double filling on filling fraction and thermal conductivity. Several samples (x = 0.50–0.90 and y = 0.15–0.48) were prepared by melting-sintering, and two of them were densified by spark plasma sintering in order to study their thermoelectric features. The crystallographic study enables the recognition of the role of the filler size in ruling the filling fraction and the compositional location of the p/n crossover: It has been found that the former lowers and the latter moves toward lower x values with the reduction of the filler ionic size, as a consequence of the progressively weaker interaction of the filler with the Sb12 cavity. The analysis of thermoelectric properties indicates that, despite the Sm3+/Gd3+ small mass difference, the contemporary presence of these ions in the 2a site significantly affects the thermal conductivity of both p- and n-compositions. This occurs by reducing its value with respect to the Sm-filled compound at each temperature considered, and making the overall thermoelectric performance of the system comparable to several multi-filled (Fe, Ni)-based skutterudites described in the literature.

A theoretical model of the thermoelectric properties of SnSxSe1−x and how to further enhance its thermoelectric performance

2019 ◽  
Vol 126 (22) ◽  
pp. 225105 ◽  
Author(s):  
Raveena Gupta ◽  
Baljinder Kaur ◽  
Jesús Carrete ◽  
Chandan Bera
Keyword(s):  
Theoretical Model ◽  
Thermoelectric Properties ◽  
Thermoelectric Performance

Effects of Ce filling fraction and Fe content on the thermoelectric properties of Co-rich CeyFexCo4−xSb12

2001 ◽  
Vol 16 (3) ◽  
pp. 837-843 ◽  
Author(s):  
Xinfeng Tang ◽  
Lidong Chen ◽  
Takashi Goto ◽  
Toshio Hirai
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Properties ◽  
Figure Of Merit ◽  
Single Phase ◽  
Lattice Thermal Conductivity ◽  
Hole Concentration ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure ◽  
Filling Fraction ◽  
Fe Content

Single-phase filled skutterudite compounds, CeyFexCo4−xSb12 (x = 0 to 3.0, y = 0 to 0.74), were synthesized by a melting method. The effects of Fe content and Ce filling fraction on the thermoelectric properties of CeyFexCo4−xSb12 were investigated. The lattice thermal conductivity of Ce-saturated CeyFexCo4−xSb12, y being at the maximum corresponding to x, decreased with increasing Fe content (x) and reached its minimum at about x = 1.5. When x was 1.5, lattice thermal conductivity decreased with increasing Ce filling fraction till y = 0.3 and then began to increase after reaching the minimum at y = 0.3. Hole concentration and electrical conductivity of Cey Fe1.5Co2.5Sb12 decreased with increasing Ce filling fraction. The Seebeck coefficient increased with increasing Ce filling fraction. The greatest dimensionless thermoelectric figure of merit T value of 1.1 was obtained at 750 K for the composition of Ce0.28Fe1.52Co2.48Sb12.

Effects of Nb doping on thermoelectric properties of Zn4Sb3 at high temperatures

2009 ◽  
Vol 24 (2) ◽  
pp. 430-435 ◽  
Author(s):  
D. Li ◽  
H.H. Hng ◽  
J. Ma ◽  
X.Y. Qin
Keyword(s):  
Thermal Conductivity ◽  
Electrical Resistivity ◽  
High Temperatures ◽  
Thermoelectric Properties ◽  
Figure Of Merit ◽  
Thermoelectric Performance ◽  
Temperature Range ◽  
A Value ◽  
Nb Doping ◽  
Thermal Conductivities

The thermoelectric properties of Nb-doped Zn4Sb3 compounds, (Zn1–xNbx)4Sb3 (x = 0, 0.005, and 0.01), were investigated at temperatures ranging from 300 to 685 K. The results showed that by substituting Zn with Nb, the thermal conductivities of all the Nb-doped compounds were lower than that of the pristine β-Zn4Sb3. Among the compounds studied, the lightly substituted (Zn0.995Nb0.005)4Sb3 compound exhibited the best thermoelectric performance due to the improvement in both its electrical resistivity and thermal conductivity. Its figure of merit, ZT, was greater than the undoped Zn4Sb3 compound for the temperature range investigated. In particular, the ZT of (Zn0.995Nb0.005)4Sb3 reached a value of 1.1 at 680 K, which was 69% greater than that of the undoped Zn4Sb3 obtained in this study.

FP-LAPW calculations of the elastic, electronic and thermoelectric properties of the filled skutterudite CeRu4Sb12

2016 ◽  
Vol 240 ◽  
pp. 126-132 ◽  
Author(s):  
A. Shankar ◽  
D.P. Rai ◽  
Sandeep Chettri ◽  
R. Khenata ◽  
R.K. Thapa
Keyword(s):  
Thermoelectric Properties ◽  
Filled Skutterudite

Significantly optimized thermoelectric properties in high-symmetry cubic Cu7PSe6 compounds via entropy engineering

2018 ◽  
Vol 6 (15) ◽  
pp. 6493-6502 ◽  
Author(s):  
Rui Chen ◽  
Pengfei Qiu ◽  
Binbin Jiang ◽  
Ping Hu ◽  
Yiming Zhang ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
Configurational Entropy ◽  
Thermoelectric Performance ◽  
High Symmetry ◽  
Type Compound

Via introducing Te into the argyrodite-type compound Cu7PSe6, the configurational entropy is increased yielding the significantly enhanced thermoelectric performance.

Ultra-low thermal conductivity and high thermoelectric performance realized in a Cu3SbSe4 based system

2021 ◽  
Vol 5 (1) ◽  
pp. 324-332
Author(s):  
J. M. Li ◽  
H. W. Ming ◽  
B. L. Zhang ◽  
C. J. Song ◽  
L. Wang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Properties ◽  
Thermoelectric Performance ◽  
Low Thermal Conductivity ◽  
Sn Doping ◽  
Temperature Range ◽  
System P

Cu3SbSe4-Based materials were fabricated through Sn-doping and AgSb0.98Ge0.02Se2 incorporation and their thermoelectric properties were investigated in the temperature range from 300 K to 675 K.

scholarly journals Benchmark characterization of the thermoelectric properties of individual single-crystalline CdS nanowires by a H-type sensor

RSC Advances ◽  
2017 ◽  
Vol 7 (41) ◽  
pp. 25298-25304 ◽  
Author(s):  
Haidong Wang ◽  
Dingshan Zheng ◽  
Xing Zhang ◽  
Hiroshi Takamatsu ◽  
Weida Hu
Keyword(s):  
Thermoelectric Properties ◽  
Thermoelectric Performance ◽  
Single Crystalline ◽  
Cds Nanowires ◽  
First Time

A precision H-type sensor method has been developed to measure the thermoelectric performance of individual single-crystalline CdS nanowires for the first time.

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