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

Meltem YanilmazBülin AtıcıJiadeng ZhuOzan ToprakciJuran Kim
Published in: RSC advances (2023)
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.
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