Ion accumulation-induced capacitance elevation in a microporous graphene-based supercapacitor.

ABSTRACT: High-performance porous 3D graphene-based supercapacitors are one of the most promising and challenging directions for future energy technologies. Microporous graphene has been synthesized by the pyrolysis method. The fabricated lightweight graphene with a few layers (FLG) has an ultra-high surface area of 2266 m² g^-1 along with various-sized micropores. The defect-induced morphology and pore size distribution of the fabricated graphene are examined, and the results show that the micropores vary from 0.85 to 1.9 nm and the 1.02 nm pores contribute 30% of the total surface area. The electrochemical behaviour of the electrode fabricated using this graphene has been studied with various concentrations of the KOH electrolyte. The highest specific capacitance of the graphe

SUBMITTER: Pattanayak B 

PROVIDER: S-EPMC9501667 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature