N-Doped carbon nanoparticles on highly porous carbon nanofiber electrodes for sodium ion batteries.

ABSTRACT: Nitrogen doped carbon nanoparticles on highly porous carbon nanofiber electrodes were successfully synthesized via combining centrifugal spinning, chemical polymerization of pyrrole and a two-step heat treatment. Nanoparticle-on-nanofiber morphology with highly porous carbon nanotube like channels were observed from SEM and TEM images. Nitrogen doped carbon nanoparticles on highly porous carbon nanofiber (N-PCNF) electrodes exhibited excellent cycling and C-rate performance with a high reversible capacity of around 280 mA h g^-1 in sodium ion batteries. Moreover, at 1000 mA g^-1, a high reversible capacity of 172 mA h g^-1 was observed after 300 cycles. The superior electrochemical properties were attributed to a highly porous structure with enlarged d-spacings, enriched defects and active sites due to nitrogen doping. The electrochemical results prove that N-PCNF electrodes are promising electrode materials for high performance sodium ion batteries.

SUBMITTER: Yanilmaz M 

PROVIDER: S-EPMC9996626 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature