ChemInform Abstract: Large Enhancements in the Thermoelectric Power Factor of Bulk PbTe at High Temperature by Synergistic Nanostructuring.

ChemInform ◽  
2009 ◽  
Vol 40 (3) ◽  
Author(s):  
Joseph R. Sootsman ◽  
Huijun Kong ◽  
Ctirad Uher ◽  
Jonathan James D'Angelo ◽  
Chun-I Wu ◽  
...  
Keyword(s):  
High Temperature ◽  
Thermoelectric Power ◽  
Power Factor ◽  
Thermoelectric Power Factor

Rapid Synthesis of Bi Substituted Ca3Co4O9 by a Polyacrylamide Gel Method and its High-Temperature Thermoelectric Power Factor

2010 ◽  
Vol 434-435 ◽  
pp. 393-396 ◽  
Author(s):  
Ying Song ◽  
Qiu Sun ◽  
Li Rong Zhao ◽  
Fu Ping Wang
Keyword(s):  
High Temperature ◽  
Thermoelectric Power ◽  
Power Factor ◽  
Solid State Reaction Method ◽  
Polyacrylamide Gel ◽  
Measured Temperature ◽  
Thermoelectric Power Factor ◽  
Gel Method ◽  
Plasma Sintering ◽  
Polyacrylamide Gel Method

A series of polycrystalline (Ca1-xBix)3Co4O9 ( x = 0.0 ~ 0.075 ) powders were synthesized rapidly by a polyacrylamide gel method. The dense ceramics were fabricated using the spark plasma sintering ( SPS ) technique. Effects of Bi substitution on high temperature thermoelectric properties of Ca3Co4O9 were evaluated. Both the electrical conductivity and Seebeck coefficient increased with increasing Bi content up to x = 0.05, thus leading to an enhanced thermoelectric power factor. The Bi substituted sample with x = 0.05 obtained in this study has the highest thermoelectric power factor in the measured temperature range. It reaches 4.810-4 Wm-1K-2 at 700 °C, which is 26 % higher than that of Ca3Co4O9 without Bi substitution, and is by up to 15 % larger as compared to the Bi substituted sample synthesized by the solid state reaction method and the SPS technique due to the high chemical homogeneous powder prepared by the polyacrylamide gel method.

Facile synthesis of morphology-controlled La:BaSnO3 for the enhancement of thermoelectric power factor

CrystEngComm ◽  
2020 ◽  
Vol 22 (32) ◽  
pp. 5363-5374 ◽  
Author(s):  
Palani Rajasekaran ◽  
Mukannan Arivanandhan ◽  
Yuki Kumaki ◽  
Ramasamy Jayavel ◽  
Yasuhiro Hayakawa ◽  
...  
Keyword(s):  
High Temperature ◽  
Thermoelectric Power ◽  
Power Factor ◽  
Oxide Materials ◽  
Facile Synthesis ◽  
Thermoelectric Power Factor

Donor-doped BaSnO3 (BSO) ceramics are promising n-type oxide materials for high-temperature thermoelectric applications.

Enhancement of thermoelectric power factor in NaxCoO2/Au multilayers

RSC Advances ◽  
2014 ◽  
Vol 4 (100) ◽  
pp. 57148-57152 ◽  
Author(s):  
Xiaohui Zhao ◽  
Haifeng Wang ◽  
Shufang Wang ◽  
Dogheche Elhadj ◽  
Jianglong Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
High Temperature ◽  
Thermoelectric Power ◽  
Power Factor ◽  
Thermoelectric Power Factor ◽  
Post Annealing ◽  
Au Thin Film

NaxCoO2/Au thin film multilayers, with a thickness of the Au layer of 0.5–12 nm, have been fabricated on c-Al2O3 by post annealing of the CoO/Au thin film multilayers in Na vapor at high temperature in air.

scholarly journals Large Enhancements in the Thermoelectric Power Factor of Bulk PbTe at High Temperature by Synergistic Nanostructuring

2008 ◽  
Vol 120 (45) ◽  
pp. 8746-8750 ◽  
Author(s):  
Joseph R. Sootsman ◽  
Huijun Kong ◽  
Ctirad Uher ◽  
Jonathan James D'Angelo ◽  
Chun-I Wu ◽  
...  
Keyword(s):  
High Temperature ◽  
Thermoelectric Power ◽  
Power Factor ◽  
Thermoelectric Power Factor

scholarly journals Improved thermoelectric power factor and conversion efficiency of perovskite barium stannate

RSC Advances ◽  
2017 ◽  
Vol 7 (52) ◽  
pp. 32703-32709 ◽  
Author(s):  
Jun Li ◽  
Zuju Ma ◽  
Rongjian Sa ◽  
Kechen Wu
Keyword(s):  
High Temperature ◽  
Electrical Properties ◽  
Thermoelectric Power ◽  
Conduction Band ◽  
Conversion Efficiency ◽  
Power Factor ◽  
Temperature Stability ◽  
High Temperature Stability ◽  
Thermoelectric Power Factor ◽  
Barium Stannate

The highly dispersive conduction band and high temperature stability contribute to the excellent electrical properties when BaSnO3 is n-type doped.

scholarly journals Large Enhancements in the Thermoelectric Power Factor of Bulk PbTe at High Temperature by Synergistic Nanostructuring

2008 ◽  
Vol 47 (45) ◽  
pp. 8618-8622 ◽  
Author(s):  
Joseph R. Sootsman ◽  
Huijun Kong ◽  
Ctirad Uher ◽  
Jonathan James D'Angelo ◽  
Chun-I Wu ◽  
...  
Keyword(s):  
High Temperature ◽  
Thermoelectric Power ◽  
Power Factor ◽  
Thermoelectric Power Factor

scholarly journals High thermoelectric power factor of pure and vanadium-alloyed chromium nitride thin films

2021 ◽  
pp. 102493
Author(s):  
M.A. Gharavi ◽  
D. Gambino ◽  
A. le Febvrier ◽  
F. Eriksson ◽  
R. Armiento ◽  
...  
Keyword(s):  
Thin Films ◽  
Thermoelectric Power ◽  
Power Factor ◽  
Chromium Nitride ◽  
Thermoelectric Power Factor

scholarly journals Macroscopic weavable fibers of carbon nanotubes with giant thermoelectric power factor

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Natsumi Komatsu ◽  
Yota Ichinose ◽  
Oliver S. Dewey ◽  
Lauren W. Taylor ◽  
Mitchell A. Trafford ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotubes ◽  
Thermoelectric Power ◽  
Power Factor ◽  
Fermi Energy ◽  
Performance Enhancement ◽  
Thermoelectric Performance ◽  
Thermoelectric Power Factor ◽  
Large Power ◽  
Energy Tuning

AbstractLow-dimensional materials have recently attracted much interest as thermoelectric materials because of their charge carrier confinement leading to thermoelectric performance enhancement. Carbon nanotubes are promising candidates because of their one-dimensionality in addition to their unique advantages such as flexibility and light weight. However, preserving the large power factor of individual carbon nanotubes in macroscopic assemblies has been challenging, primarily due to poor sample morphology and a lack of proper Fermi energy tuning. Here, we report an ultrahigh value of power factor (14 ± 5 mW m−1 K−2) for macroscopic weavable fibers of aligned carbon nanotubes with ultrahigh electrical and thermal conductivity. The observed giant power factor originates from the ultrahigh electrical conductivity achieved through excellent sample morphology, combined with an enhanced Seebeck coefficient through Fermi energy tuning. We fabricate a textile thermoelectric generator based on these carbon nanotube fibers, which demonstrates high thermoelectric performance, weavability, and scalability. The giant power factor we observe make these fibers strong candidates for the emerging field of thermoelectric active cooling, which requires a large thermoelectric power factor and a large thermal conductivity at the same time.

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