The electrospinng method has emerged as a powerful technique
for fabricating polymer fibers due to its adaptability, ease of use and
ability to align structures [1,2]. The electrospun polymer fiber
possesses several unique characteristics, such as having high specific surface area and being lightweight and flexibile, which makes
the electrospun polymer fiber able to be applied in many fields as a
scaffold or sensor, etc. [1e3]. However, because of the intrinsic
insulating property of the polymer material, the electrospun
polymer fiber exhibits low electrical property, which limits its
practical applications. Based on previous studies [4,5], the incorporation of nanofillers have been seen as a useful approach for
improving these insufficient properties.