Celery-derived porous carbon materials for superior performance supercapacitors.

ABSTRACT: Supercapacitors are of paramount importance for next-generation applications, demonstrating high energy output and an ultra-long cycle life, and utilizing green and sustainable materials. Herein, we utilize celery, a common biomass from vegetables, by a facile low-cost pyrolysis and activation method for use in high-voltage, high-energy, and high-power supercapacitors. The as-synthesized hierarchically porous carbon materials with a high surface area of 1612 m² g^-1 and a large quantity of nitrogen and phosphorus heteroatoms exhibit a high specific capacitance of 1002.80 F g^-1 at 1 A g^-1 and excellent cycling stability of 95.6% even after 10 000 cycles (10 A g^-1) in aqueous electrolytes. Moreover, the assembled symmetric cell delivers a

SUBMITTER: Liu S 

PROVIDER: S-EPMC9418012 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature