کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1785474 | 1023381 | 2016 | 7 صفحه PDF | دانلود رایگان |
• CNTs and Bi/Te powder were mixed in polydimethyl siloxane (PDMS) to develop a flexible thermoelectric material.
• The PDMS used for the hybrid thermoelectric material was also used as the substrate.
• Carbon nanotubes were used to enhance electrical conductivity.
• The flexible thermoelectric generator maintained its performance during 1000 bending reliability tests.
In this paper, the fabrication and characterization of a flexible thermoelectric generator (TEG) is presented. Bismuth telluride powder (Bi/Te) is utilized as p- and n-type thermoelectric materials, and carbon nanotubes (CNTs) are used to enhance electrical conductivity. Both the CNTs and bismuth telluride (Bi/Te) powder are mixed with a solution of polydimethyl siloxane (PDMS) as a precursor. The same PDMS used for the hybrid thermoelectric materials is also used as the substrate, making the TEG flexible and increasing its stability. The Seebeck coefficients of the fabricated p- and n-type thermoelectric materials are 143 and -174 μV/K, respectively. The output voltage of the fabricated device is 920 mV and the generated power is 570 μW/cm2 with a temperature difference of 60 °C. The fabricated TEG maintains its performance level during bending reliability tests on a curvature with a radius as small as 5 mm, and after more than 1000 repetitions of bending on a curvature with a radius of 20 mm.
Journal: Current Applied Physics - Volume 16, Issue 10, October 2016, Pages 1442–1448