Improved thermoelectric performance of Te-doped and CNT dispersed CoSb3 skutterudite bulk materials via HTHP

RSC Advances ◽  
2015 ◽  
Vol 5 (75) ◽  
pp. 61324-61329 ◽  
Author(s):  
Hairui Sun ◽  
Xiaopeng Jia ◽  
Pin Lv ◽  
Le Deng ◽  
Xin Guo ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
Thermoelectric Performance ◽  
Bulk Materials

CNTs were dispersed in Co4Sb11.5Te0.5 skutterudite bulk materials via a HTHP method. The effects of the Te and CNT content on the structure and thermoelectric properties were investigated under different pressures.

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 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.

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.

Enhanced thermoelectric performance of n-type PbTe bulk materials fabricated by semisolid powder processing

2014 ◽  
Vol 609 ◽  
pp. 201-205 ◽  
Author(s):  
Deqing Mei ◽  
Yang Li ◽  
Zhehe Yao ◽  
Hui Wang ◽  
Tiejun Zhu ◽  
...  
Keyword(s):  
Powder Processing ◽  
Thermoelectric Performance ◽  
Bulk Materials

LOW TEMPERATURE THERMOELECTRIC PROPERTIES AND AGING PHENOMENA OF NANOSTRUCTURED p-TYPE Bi2-XSbXTe3 (x = 1.46, 1.48, 1.52 AND 1.55)

2013 ◽  
Vol 06 (05) ◽  
pp. 1340008 ◽  
Author(s):  
DALE HITCHCOCK ◽  
YEN-LIANG LIU ◽  
YUFEI LIU ◽  
TERRY M. TRITT ◽  
JIAN HE ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Low Temperature ◽  
Thermoelectric Properties ◽  
Optimal Composition ◽  
Ambient Conditions ◽  
Bulk Materials ◽  
The Past ◽  
Aging Phenomena ◽  
P Type ◽  
Cold Pressed

Over the past decade the widely used p-type ( Bi 2-x Sb x) Te 3 bulk thermoelectric materials have been subject to various nanostructuring processes for higher thermoelectric performance. However, these nanostructuring processing were conducted on compositions optimized for bulk materials (x ~ 1.52–1.55). This leads to the question of whether the optimal composition for bulk materials is the same for their nanoscale counterparts. In this work we hydrothermally grew Bi 2-x Sb x Te 3 nanopowders (nominally, x = 1.46, 1.48, 1.52 and 1.55) and measured their thermoelectric properties on cold-pressed vacuum-sintered pellets (74–78% of the theoretical density) below 300 K. The measurements were conducted 18 months apart to probe the aging phenomena, with the samples stored in ambient conditions. We have found that (i) the peak of thermopower shifts to lower temperatures upon nanostructuring but it shifts back to higher temperatures upon aging; (ii) the electrical conductivity degrades by a factor of 1.5–2.3 upon aging while the temperature dependence is largely retained; and (iii) the ZT of freshly made samples is sensitive to the x value, a maximum ZT ~ 1.25(~ 0.62) at ~ 270 K (~ 255 K) was attained in the freshly made sample x = 1.55(x = 1.46), respectively; while the ZT of aged samples is significantly lowered by a factor of 2–4 but lesser x-dependent. These observations have been discussed in the context of charge buildup and compensation at grain boundaries.

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.

Microstructure and thermoelectric properties of Bi-Sb-Te bulk materials fabricated from rapidly solidified powders

2017 ◽  
Vol 136 ◽  
pp. 111-114 ◽  
Author(s):  
Zhi-Lei Wang ◽  
Takahiro Akao ◽  
Tetsuhiko Onda ◽  
Zhong-Chun Chen
Keyword(s):  
Thermoelectric Properties ◽  
Bulk Materials ◽  
Rapidly Solidified

Cu1.75Te nanowires as building blocks to fabricate bulk materials with enhanced thermoelectric performance

2019 ◽  
Vol 35 (9-10) ◽  
pp. 529-533
Author(s):  
Bangzhi Ge ◽  
Jiabin Hu ◽  
Qiong Wang ◽  
Hongyan Xia ◽  
Shunjian Xu ◽  
...  
Keyword(s):  
Building Blocks ◽  
Thermoelectric Performance ◽  
Bulk Materials

scholarly journals High thermoelectric performance of rapidly microwave-synthesized Sn1−δS

2020 ◽  
Vol 1 (4) ◽  
pp. 845-853
Author(s):  
Jesús Prado-Gonjal ◽  
Javier Gainza ◽  
Isabel Aguayo ◽  
Óscar Juan Durá ◽  
Sara Rodríguez-Pérez ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
Thermoelectric Performance ◽  
Hydrothermal Route ◽  
Microwave Hydrothermal

Promising thermoelectric properties were found for polycrystalline Sn1−δS synthesized by a microwave-hydrothermal route (ZT = 0.76 at 523 K).

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