The active material plays a vital role in fabricating electrodes for energy devices by storing charge/ions. We report the electrochemical performance of morphologically distinct active materials derived from lignin. AC (Activated carbon) and ACNF (Activated carbon nanofiber mats) were fabricated by pre-carbonization (600 °C) followed by KOH-derived activation at 800 °C. Crushed carbon nanofibers (Cr-CNF) were prepared by crushing a pre-carbonized nanofiber mat and activating it with KOH. These prepared active material candidates were characterized and compared using SEM and BET analyses for morphological, surface area, and porosity variances. In addition, Raman spectroscopy and I-V experiments were performed to evaluate the extent of disorders and electrical conductivity, respectively. Finally, to compare the electrochemical performance of the AC, Cr-CNF, and ACNF as electrode materials, CV, GCD, and EIS experiments were conducted. Furthermore, due to interconnected 2-D nano fabric structure of the ACNF mat ensures a more excellent specific capacitance value of 265.64 F/g than the Cr-CNF (188.96 F/g) and AC (130.78F/g) electrodes at the same current density of 0.5 A/g. These findings reveal information on the emergence of interconnected nanofiber mats for superior electrochemical activity as energy storage electrodes.