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|
| Type |
Poster Presentation |
| Area |
Industrial Chemistry |
| Room No. |
Event Hall |
| Time |
4월 19일 (목요일) 11:00~12:30 |
| Code |
IND.P-11 |
| Subject |
3-dimensional graphene-based carbon frameworks prepared from bisolvent medium and their application in supercapacitors |
| Authors |
YEONG-RAE SON, Soo-Jin Park*
Department of Chemistry, Inha University, Korea
|
| Abstract |
Graphene oxide (GO), carbon nanotubes (CNTs), and graphene have been employed to a diverse fields owing to their outstanding characteristics. However, such graphene-based materials are hard to be utilized as active materials in supercapacitor due to their few drawbacks such as restacked graphene layers resulting in blocking electrolyte pathway. To solve these problems, CNTs plays an important role as not only the spacers but also electrical pathway which can enhance the electrical conductivity.
In the present work, sponge-like graphene oxide/carbon nanotubes foam (SGCF) was prepared through sonication and freeze-dry process of GO/CNT dispersion in water-ethanol medium. The as-prepared SGCF possesses holey structure, leading to providing highly effective electrolyte pathway. Reduced SGCF (rSGCF) which can be used as electrode in supercapacitor can be prepared by annealing the SGCF without distinct deformation. The characterization of SGCF and rSGCFs was analyzed by X-ray diffractometer, transmission electron microscopy and scanning electron microscopy. The electrochemical measurements of rSGCF were performed by cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy. The rSGCF electrode possesses excellent rate capability and cycling stability owing to its high electrical conductivity and superior structural stability. |
| E-mail |
rosysky2010@naver.com |
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121st General Meeting of the KCS