Physicochemical Properties of Nitrogen Doped Carbon Nano‐onions Grown by Flame Pyrolysis from Grapeseed Oil for Use in Supercapacitors | Zendy

Shaku Bokome | Zendy; Mofokeng Thapelo P. | Zendy; Mongwe Thomas H. | Zendy; Coville Neil J. | Zendy; Ozoemena Kenneth I. | Zendy; MaubaneNkadimeng Manoko S. | Zendy

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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.

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