Herein, we employed the lignin as sustainable carbon precursor with polyacrylonitrile (PAN) to synthesize the carbon nanofibers (CNFs), and coated the polyaniline (PANI) to acquire the high N-doped CNFs. The as-obtained lignin-derived nitrogen-doped polyacrylonitrile/polyaniline carbon nanofibers (LCNFs/PANI/N-9) displayed excellent properties, such as the large specific surface areas of 483.1 m(2) g(-1), uniform pore size distributions of 9.1 nm, high graphitic structure, and high nitrogen doping content of 6.31 wt%. The uniform diameter of CNFs could allow a short ion diffusion path with efficient electron transport. And the highest specific capacitance of the LCNFs/PANI/N-9 increased to 199.5 F g(-1) at 1 A g(-1). Besides, the N-doped CNFs presented excellent cycling stability with 82% capacitance retention after 1000 charge-discharge cycles at the current density of 4 A g(-1). This research opened the new promising of high-value applications for inexpensive and renewable biomass.

• Journal: Ionics
• Volume: 26
• Issue:
• Pages: 4651-4660
• ISSN: 0947-7047
• DOI:
• Year: 2020
• Number: 9
• Type: Journal Article