It is seen from Fig. 3 that for all three samples, electrospun fibers
form “network-like” structures. At the same time, variations in the
fiber diameters are observed and beads are also formed. As shown
in Fig. 3d, with increase in LiFePO4 precursor concentration, the
average fiber diameter of electrospun LiFePO4 precursor/PAN fibers
decreases (i.e., DS1 > DS2 > DS3).