Composite of polypyrrole - Graphene hollow fibers mat-a flexible thermoelectric material

Polypyrrole and graphene hollow fibers composite (PGHF) were synthesized by sacrificial removal of soft templates of electrospun polycaprolactone fibers via chemical oxidative polymerization route. X-ray diffraction, scanning electron microscopy and thermogravimetric analysis were employed to check the formation of material. Thermoelectric properties were measured at room temperature as function of different weight ratios of composites, where the figure of merit was modified approximately 150 times compared to pristine polypyrrole revealing PGHF to be a potential candidate as flexible thermoelectric material at room temperature.