Fabrication and Characterization of Thermoelectric Nanofibers Derived from Polyacrylonitrile and Transition Metal Oxide Precursors
발표자
()
초록
내용
Thermoelectric materials have been widely investigated as a promising way to harvest electricity from waste heat. Especially, nanostructured materials are considered to be more effective than bulk materials in enhancing thermoelectric figure of merit through phonon scattering at grain boundaries and interfaces. In this study, a series of thermoelectric hybrid carbon nanofibers (CNFs) were fabricated by electrospinning and carbonization of polyacrylonitrile (PAN), followed by dip-coating of NaCo2O4 precursor at different dipping times and concentrations. The morphological features of the thermoelectric hybrid CNFs were characterized by using XRD, SEM, and Raman spectroscopy. The electrical conductivity, thermal conductivity, Seebeck coefficient, and power density of the thermoelectric hybrid CNFs were investigated by considering the microstructure and content of NaCo2O4.