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|
| Type |
Poster Presentation |
| Area |
Material Chemistry |
| Room No. |
Event Hall |
| Time |
4월 20일 (금요일) 11:00~12:30 |
| Code |
MAT.P-327 |
| Subject |
Nitrogen-doped mesoporous graphene with a few nanometer-level controlled pore size |
| Authors |
Jihye Lee, Hyun Jung*
Department of Chemistry, Dongguk University, Korea
|
| Abstract |
We successfully synthesized nitrogen-doped mesoporous graphene (NMG) with high surface area, three dimensional porous network and controlled pore size in a few nanometer. As-prepared NMG was obtained by hydrothermal process of graphite oxide (GO) and self-assembled triblock copolymer template (Pluronic P123) in the presence of ammonium hydroxide as a nitrogen source. Then, as-prepared NMG was washed with using various volume ratio of water/ethanol to regulate pore size. Finally, the NMGs were prepared by calcination of the obtained products at 700 oC for 3 h under Ar atmosphere. The fabricated NMGs have not only high specific surface area (941 ~ 1198 m2/g) and narrow pore size distribution but also average mesopore size of NMG can be rationally tuned in a few nanometer-level (4.4 ~ 11.2 nm) through controlling the degree of dissolving P123 micelles depend on the polarity of washing solvent. To preliminary test the performance as a supercapacitor, cyclic voltammetry (CV), galvanostatic charge-discharge (CD) and electrochemical impedance spectroscopy (EIS) of the obtained NMGs were evaluated in three-electrode system with 6.0 M KOH aqueous solution. |
| E-mail |
_blueskyfany_@hanmail.net |
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121st General Meeting of the KCS