Preparation of nitrogen-doped porous carbons for high-performance supercapacitor using biomass of waste lotus stems.

ABSTRACT: In this study, advanced nitrogen-doped porous carbon materials for supercapacitor was prepared using low-cost and environmentally friendly waste lotus stems (denoted as LS-NCs). Nitrogen in the surface functionalities of LS-NCs was investigated using X-ray photoelectron spectroscopy analysis. The sum of pyridine nitrogen (N-6) and pyrrolic/pyridinic (N-5) contents accounted for 94.7% of the total nitrogen and significantly contributed to conductivity. Pore structure and surface area of activated carbons were measured using the Brunauer-Emmett-Teller method. A maximum specific surface area of 1322 m² g^-1 was achieved for LS-NCs. The porous carbons exhibited excellent electrochemical properties with a specific capacitance of 360.5 F g^-1 at a current density o

SUBMITTER: Yan S 

PROVIDER: S-EPMC9078325 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature