Physicochemical Properties of Nitrogen Doped Carbon Nano-onions Grown by Flame Pyrolysis from Grapeseed Oil for use in Supercapacitors

被引：20

作者：

Shaku, Bokome ^{[1
,2
]}

Mofokeng, Thapelo P. ^{[1
,2
]}

Mongwe, Thomas H. ^{[1
,2
]}

Coville, Neil J. ^{[1
,2
]}

Ozoemena, Kenneth, I ^{[1
,2
]}

Maubane-Nkadimeng, Manoko S. ^{[1
,2
,3
]}

机构：

[1] Univ Witwatersrand, DSI NRF Ctr Excellence Strong Mat, Sch Chem, Private Bag 3, ZA-2050 Johannesburg, South Africa

[2] Univ Witwatersrand, Sch Chem, Mol Sci Inst, Private Bag 3, ZA-2050 Johannesburg, South Africa

[3] Univ Witwatersrand, Microscopy & Microanal Unit, Private Bag 3, ZA-2050 Johannesburg, South Africa

来源：

ELECTROANALYSIS | 2020年 / 32卷 / 12期

基金：

新加坡国家研究基金会;

关键词：

Carbon nano-onions; Flame pyrolysis; Nitrogen doping; Supercapacitors; POROUS CARBON; ION-IMPLANTATION; GRAPHENE OXIDE; PERFORMANCE; BORON; WATER; CAPACITANCE; NANOTUBES; ELECTRODE; FILMS;

D O I：

10.1002/elan.202060383

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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.

引用

页码：2946 / 2957

页数：12

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