Ethylene-octene-copolymer with embedded carbon and organic conductive nanostructures for thermoelectric applications

0531095 - ÚH 2021 RIV CH eng J - Článek v odborném periodiku
Slobodian, P. - Říha, Pavel - Olejník, R. - Sedlačík, M.
Ethylene-octene-copolymer with embedded carbon and organic conductive nanostructures for thermoelectric applications.
Polymers. Roč. 12, č. 6 (2020), č. článku 1316. E-ISSN 2073-4360
Institucionální podpora: RVO:67985874
Klíčová slova: carbon fibers * carbon nanotubes * ethylene-octene-copolymer * polyaniline * polypyrrole * thermoelectric composites
Obor OECD: Nano-processes (applications on nano-scale)
Impakt faktor: 4.329, rok: 2020
Způsob publikování: Open access
https://www.mdpi.com/2073-4360/12/6/1316

Hybrid thermoelectric composites consisting of organic ethylene-octene-copolymer matrices (EOC) and embedded inorganic pristine and functionalized multiwalled carbon nanotubes, carbon nanofibers or organic polyaniline and polypyrrole particles were used to form conductive nanostructures with thermoelectric properties, which at the same time had sufficient strength, elasticity, and stability. Oxygen doping of carbon nanotubes increased the concentration of carboxyl and C-O functional groups on the nanotube surfaces and enhanced the thermoelectric power of the respective composites by up to 150%. A thermocouple assembled from EOC composites generated electric current by heat supplied with a mere short touch of the finger. A practical application of this thermocouple was provided by a self-powered vapor sensor, for operation of which an electric current in the range of microvolts sufficed, and was readily induced by (waste) heat. The heat-induced energy ensured the functioning of this novel sensor device, which converted chemical signals elicited by the presence of heptane vapors to the electrical domain through the resistance changes of the comprising EOC composites.
Trvalý link: http://hdl.handle.net/11104/0309839