scholarly journals Thermoelectric Properties of Carbon Nanotube and Nanofiber Based Ethylene-Octene Copolymer Composites for Thermoelectric Devices

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
P. Slobodian ◽  
P. Riha ◽  
R. Olejnik ◽  
M. Kovar ◽  
P. Svoboda
Keyword(s):  
Carbon Nanotubes ◽  
Thermoelectric Properties ◽  
Output Voltage ◽  
Room Temperature ◽  
Thermoelectric Device ◽  
Thermoelectric Effect ◽  
Thermoelectric Efficiency ◽  
Multiwalled Carbon ◽  
Ethylene Octene Copolymer ◽  
Flexible Thermoelectric

Polymer composites have been created from multiwalled carbon nanotubes or carbon nanofibers and ethylene-octene copolymer. The composites have thermoelectric properties and exhibit thermoelectric effect, that is, the conversion of temperature differences into electricity. The thermoelectric efficiency of created composites with nanotube or nanofiber concentration of 30 wt% evaluated by a thermoelectric power at room temperature is 13.3 μV/K and 14.2 μV/K, respectively. The flexible thermoelectric device (thermopile) was constructed with three different composite legs to produce electric current and the output voltage was measured in the range of temperature difference from −15 to 25°C.

Effect of multiwalled carbon nanotubes on the thermoelectric properties of Mn-Zn ferrites

2017 ◽  
Vol 72 ◽  
pp. 130-133 ◽  
Author(s):  
Shupin Zhang ◽  
Aimin Li ◽  
Kangning Sun ◽  
Xiaoning Sun ◽  
Yaping Wang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Thermoelectric Properties ◽  
Multiwalled Carbon

Tailoring the Seebeck Coefficient of Spray-Coated Poly(3,4-ethylenedioxythiophene): Poly(styrenesulfonate) Films with Nitrogen Doped Multiwalled Carbon Nanotubes

2020 ◽  
Vol 20 (6) ◽  
pp. 3576-3581
Author(s):  
Ruben Sarabia-Riquelme ◽  
Camila Gomez ◽  
Dali Qian ◽  
John Craddock ◽  
Matthew Weisenberger
Keyword(s):  
Carbon Nanotubes ◽  
Seebeck Coefficient ◽  
Multiwalled Carbon Nanotubes ◽  
Thermoelectric Properties ◽  
Composite Films ◽  
Spray Coating ◽  
Multiwalled Carbon ◽  
Nitrogen Doped ◽  
Mwcnt Concentration ◽  
Polyethylene Terephthalate Substrate

The thermoelectric properties of flexible thin films fabricated from two commercial poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) formulations filled with multiwalled carbon nanotubes (MWCNT) and nitrogen-doped MWCNT (N-MWCNT) were investigated. A simple spray-coating method for the fabrication of such flexible films on a polyethylene terephthalate substrate was developed. While increasing the MWCNT concentration had little effect on the thermoelectric properties, increasing the N-MWCNT concentration resulted in the emergence of an overall n-type semiconducting behavior and, thereby, tailoring the Seebeck coefficient of the composite films from p-type to n-type was shown. The Seebeck coefficient of the two PEDOT:PSS formulation films was inverted from 4.1 to −13.3 μV/K and from 12.5 to −10.9 μV/K respectively, with increasing N-MWCNT concentration from 0 to 95 wt.%. The importance of these results for future work stems from the possibility of tailoring the behavior of a typical p-type polymer such as PEDOT:PSS and the effect that the polymer conductive grade has on the switching concentration.

Multiwalled carbon nanotubes are ballistic conductors at room temperature

2002 ◽  
Vol 74 (3) ◽  
pp. 363-365 ◽  
Author(s):  
C. Berger ◽  
Y. Yi ◽  
Z.L. Wang ◽  
W.A. de Heer
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Room Temperature ◽  
Multiwalled Carbon

Enhancement of Thermoelectric Properties of P3HT by Addition of Carbon Nanotubes

2019 ◽  
pp. 59-77
Author(s):  
Arif ◽  
Muhammad Tahir ◽  
Hijaz Ahmad
Keyword(s):  
Thin Film ◽  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Renewable Energy ◽  
Thermoelectric Properties ◽  
Material Characterization ◽  
Figure Of Merit ◽  
Room Temperature ◽  
Casting Technique ◽  
Semiconducting Material

In this paper, the enhancement in the thermoelectric properties of the organic semiconducting material, poly(3-hexylthiophene) (P3HT) by addition of carbon nanotubes (CNTs), have been studied for applications in the renewable energy. For this purpose, the thin film of P3HT: CNTs blend has been deposited on the glass substrate by drop casting technique. The blend is prepared by the ratio of 10: 0.5 mg of P3HT: CNTs at room temperature in chloroform. The thickness of P3HT: CNTs nanocomposite found by ellipsometer was 2570 nm. The Seebeck coefficient of the film is measured to be 58.18 mV/K and the electrical conductivity of nanocomposite was 254 S/cm found by four probe method. The bandgap of P3HT: CNTs nanocomposite was 1.4 eV measured by UV-Vis spectrometer. In this blend, the CNTs are used for enhancement of the thermoelectric properties of the film. The films are also characterized by different material characterization techniques. These characterizations are correlated with the thermoelectric properties of the material. The optimized value of the figure of merit (ZT) for the thin film has been achieved ZT = 0.14 for the P3HT: CNTs nanocomposites.

Room-temperature, selective detection of benzene at trace levels using plasma-treated metal-decorated multiwalled carbon nanotubes

Carbon ◽  
2010 ◽  
Vol 48 (12) ◽  
pp. 3477-3484 ◽  
Author(s):  
Radouane Leghrib ◽  
Alexandre Felten ◽  
Fréderic Demoisson ◽  
François Reniers ◽  
Jean-Jacques Pireaux ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Room Temperature ◽  
Selective Detection ◽  
Multiwalled Carbon
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