Abstract:
Supercapacitors are being progressively acknowledged as the ideal option for energy
storage due to the fact that they have outstanding cycle stability, superior power density,
the capacity to charge and discharge quickly, and operations that are not especially
complicated. The use of supercapacitors has increased because of its ability to endure
millions of charge cycles without experiencing significant degradation, which is not the
case with batteries. They are the endurance athletes of the energy storage industry. Here
in the study the synthesis of distinct carbon electrode materials, including basic
carbons and highly porous carbon, from bio-waste using carbonization, hydrothermal
acidolysis, and template-assisted carbonization. The SEM analysis revealed that the
carbon to activated porous carbon activation process successfully created a high
concentration of voids and rough surface in the carbon matrix, indicating a combined
enhancement in surface area. The BET results verified that the materials have a
mesoporous structure among them the activated porous carbon material showed micro
along with mesopores, because of this, it has a large surface area and pore volume, both
of which have the potential to improve its performance. The activated porous carbon
electrode material exhibited significant capacitive activity, while maintaining a current
density of 1 A g-1
, the specific capacitance of 1640 F g-1 was achieved. The cyclic
stability of the activated porous carbon material was extremely excellent, as evidenced
by the fact that it retained 99.6% of its capacitance even after being subjected to 15,000
cycles. This clearly shows the improved structural integrity and the existence of
numerous highly permeable and reactive areas within the material. These significant
capabilities make our material superior to previously documented carbon materials
derived from biowaste carbon precursors.
