N-doped carbon materials as electrodes for highly stable supercapacitors

ABSTRACT

This article reports a strategy to use nitrogen-doped carbon materials as electrodes for supercapacitors. Depending on the carbon precursor, the porous structure is changed with specific surface area reached up to 2270 m²g⁻¹. The capacitance of carbon materials used as electrodes is related strictly to pore size. The microstructure and nitrogen functionalities enable a high capacitance (327 F g⁻¹) and cycle durability. The nanoporous carbon electrode exhibits long-term cycle life and high cycle stability with a retention of 86% of its initial after 10,000 cycles in neutral electrolyte. Highly porous carbons are thus considered a promising material for supercapacitors.

GRAPHICAL ABSTRACT

KEYWORDS:

• Carbon electrode
• porous structure
• high stability
• supercapacitor

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was carried out as a result of the research project no. LIDER/32/0116/L-9/17/NCBR/2018, financed by the National Centre for Research and Development.