Abstract
ABSTRACTIn this paper, we have studied the relevant physical quantities to the figure of merit of carbon nanotube (CNT)/polydimethylsiloxane composites at different loadings, and found that with increasing the CNT loadings, the electrical conductivity jumps several orders in magnitude at ‘threshold’, followed by a saturated plateau, and the Seebeck coefficient decreases by a small margin, and the thermal conductivity increases somewhat. According to the formula of the figure of merit, it is found that higher loading composites display a larger figure of merit. We hope the present study provides a new path to high-performance flexible thermoelectric materials.
Highlights
Thermoelectric materials are a kind of functional materials which are able to convert heat into electricity based on the internal carrier movement, and are mainly used for thermoelectric power generation and refrigeration, etc. [1,2,3]
According to the formula of the figure of merit, it is found that higher loading composites display a larger figure of merit
We prepared a series of carbon nanotube (CNT)/ polydimethylsiloxane (PDMS) silicone rubber composites with different CNT loadings by filling different proportions of CNTs into silicone rubber, and measured their electrical
Summary
Thermoelectric materials are a kind of functional materials which are able to convert heat into electricity based on the internal carrier movement, and are mainly used for thermoelectric power generation and refrigeration, etc. [1,2,3]. Since carbon nanotube (CNT) was discovered, because of its unique structure, the performance of CNT has been a hot research topic [4,5,6,7,8,9,10]. In the thermal power research, as a result of the unique onedimensional structure, CNTs are expected to enhance carrier mobility and increase the phonon scattering at the wall surfaces, can improve the figure of merit as thermoelectric materials. We prepared a series of CNT/ polydimethylsiloxane (PDMS) silicone rubber composites with different CNT loadings by filling different proportions of CNTs into silicone rubber, and measured their electrical
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