“…Their copolymers and polymer blends have been also studied as precursors in order to improve the electrochemical properties of the resultant CNFs. For copolymer precursors, vinyl imidazole, itaconic acid, and acrylic acid have been reported as comonomers of PAN, and CNFs derived from these copolymers show higher electrochemical performance compared to those from PAN only [ 15 , 16 , 17 ]. It is also known that using polymer blends as carbon precursors is effective in producing porous CNFs with excellent energy storage performance.…”