Recent strong interests in wearable electronics [1] and multifunctional
fiber reinforced composites [2] have stimulated research in fiberbased
supercapacitors for the possible integrations with flexible
electronics [3,4]. Polyacrylonitrile (PAN)-based carbon fiber (CF) is
one candidate for fiber-based supercapacitor electrode with high
mechanical strength and modulus. Furthermore, It has excellent
electrical and thermal conductivity, which make