Proceedings of the Korean Vacuum Society Conference (한국진공학회:학술대회논문집)
- 2014.02a
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- Pages.485.1-485.1
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- 2014
Three-dimensional Graphene Aerogels for Electrochemical Energy Storage
- Yun, Sol (Department of Chemical Engineering, College of Engineering, Kyung Hee University) ;
- Park, Ho Seok (Department of Chemical Engineering, College of Engineering, Kyung Hee University)
- Published : 2014.02.10
Abstract
In this research, we report the synthesis of three-dimensional (3D) hierarchical porous graphene aerogels (hpGAs) for application to electrochemical energy storage. For electrochemical systems, the specific capacitance is a key parameter to evaluate the characteristics of electrode materials. By taking full advantage of large surface area, 3D hpGAs would achieve the larger specific capacitance over rGO film and GAs. Microscopic structures and topologies of hpGAs were investigated using field emission scanning electron microscopy and transmission electron microscopy. X-ray photoelectron spectroscopy was used to determine the chemical compositions of rGO film, GAs, and hpGAs. Raman spectra were recorded from 100 to 2500 cm-1 at room temperature using a Raman spectroscopy equipped with a