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Physicochemical Properties of Nitrogen Doped Carbon Nano‐onions Grown by Flame Pyrolysis from Grapeseed Oil for Use in Supercapacitors
Author(s) -
Shaku Bokome,
Mofokeng Thapelo P.,
Mongwe Thomas H.,
Coville Neil J.,
Ozoemena Kenneth I.,
MaubaneNkadimeng Manoko S.
Publication year - 2020
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.202060383
Subject(s) - supercapacitor , pyrolysis , nitrogen , x ray photoelectron spectroscopy , electrochemistry , raman spectroscopy , carbon fibers , chemistry , nano , capacitance , chemical engineering , doping , materials science , electrode , organic chemistry , composite material , composite number , optoelectronics , engineering , physics , optics
A low cost synthesis of catalyst free carbon nano‐onions (CNOs) and nitrogen post doped CNOs (N−CNOs) using grapeseed oil is reported. Successful incorporation of nitrogen atoms into the lattice of CNOs was confirmed by XPS, resulting in 1.7 % nitrogen content. BET and Raman analysis showed an increase in the specific surface area and the I D /I G ratio of carbon, respectively after N incorporation. The specific capacitance of the CNOs increased upon nitrogen doping and as a result, N−CNOs exhibited superior electrochemical performance compared to pristine CNOs. Our results demonstrate that N−CNOs are a promising electrode material for energy storage in supercapacitors.