2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 9: Molten Salts and Ionic Liquids, Energy Production

Editors:	Kongoli F, Gaune-Escard M, Turna T, Mauntz M, Dodds H.L.
Publisher:	Flogen Star OUTREACH
Publication Year:	2016
Pages:	390 pages
ISBN:	978-1-987820-24-9
ISSN:	2291-1227 (Metals and Materials Processing in a Clean Environment Series)

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Combustion grown carbon hollow nanospheres and a few atomic layer nanosheets with improved capacitive properties

Seong Hun Lee¹; Hayk Nersisyan²; Jong Hyeon Lee³;
¹CHUNGNAM NATIONAL UNIVERSITY, Daejeon, Korea (Republic of [South] Korea); ²GRADUATE SCHOOL OF DEPARTMENT OF ADVANCED MATERIALS ENGINEERING, CHUNGNAM NATIONAL UNIVERSITY, Daejeon, Korea (Republic of [South] Korea); ³RASOM, CHUNGNAM NATIONAL UNIVERSITY, Daejeon, Korea (Republic of [South] Korea);
Type of Paper: Regular
Id Paper: 407
Topic: 13

Abstract:

Carbon hollow nanospheres and a few atomic layer nanosheets were prepared from organic polymer-NaN3 and Me2CO3-reductant mixtures using solid state combustion method. The structural properties and surface chemistry were characterized by nitrogen sorption at 77 K, transmission electron microscopy and Raman spectroscopy. The results showed that the obtained carbon possessed unique porous structure: mesopores with the size of 2 to 50 nm and macropores at 50~200 nm. Both of the shape and porous structure could be controlled by adjusting the initial mixture composition and the combustion temperature. The electrochemical performance was investigated by cyclic voltammetry, galvanostatic charge/discharge and impedance spectroscopy in 1-6M KOH. Analysis revealed that the combustion process could greatly enhance the capacitance and high meso/macro-porosity ensured high rate performance. Due to the highest meso/macro-porosity and high content of heteroatoms, such as O2 ( also N2) the combustion-derived carbon samples showed superior electrochemical performance: specific capacitance of 250F g-1 and capacitance retention of 70-75%.

Keywords:

Carbon; hollow carbon; mesoporous carbon; Capacitance


Cite this article as:

Lee S, Nersisyan H, Lee J. Combustion grown carbon hollow nanospheres and a few atomic layer nanosheets with improved capacitive properties. In: Kongoli F, Gaune-Escard M, Turna T, Mauntz M, Dodds H.L., editors. Sustainable Industrial Processing Summit SIPS 2016 Volume 9: Molten Salts and Ionic Liquids, Energy Production. Volume 9. Montreal(Canada): FLOGEN Star Outreach. 2016. p. 185-186.