CNFs are often produced by thermal treatment of electrospun polymer nanofibers, followed by carbonization at high temperature. The commonly used polymer nanofibers for such purposes includes those made of polyacrylonitrile (PAN), polyvinylpyrrolidone (PV), cellulose acetate (CA), polyvinyl alcohol (PVA), polymethyl methacrylate (PMMA), phenolic resin, pitch, lignin, etc. . The CVD synthesis of CNFs are based on the substrate depended one-dimensional growth of carbon though special catalysts as mediators . Threedimensional (3D) CNFs-based nanomaterials have received great attention, focusing on their development of synthesis and application techniques. 3D CNFs exhibit unique properties and intriguing functions like high specific surface area, interrelated porous structure, light weight, and high mechanical strength, compared to 0D, 1D and 2D carbon materials and thus expands their applications in various fields . However, fabrication of CNFs as electrode materials showcases few disadvantages such as poor hydrophilicity, utilization of less specific surface area, and low energy density, which needs to be addressed for the development of highperformance supercapacitors.