| 학회 |
한국고분자학회 |
| 학술대회 |
2011년 봄 (04/07 ~ 04/08, 대전컨벤션센터) |
| 권호 |
36권 1호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
Nanohybridazation of Graphene by Ionic Liquidsfor an Application into Supercapacitor |
| 초록 |
In this work, we report the nanobybridization of reduced graphene oxides (RGOs) by ionic liquids (ILs) for providing RGOs with special properties while simultaneously obtaining stable colloidal suspensions. Owing to the functionality of ILs, RGO/IL hybrids showed higher dispersion capability in organic solvents. The specific capacitances of RGO/IL hybrids calculated by cyclic voltametry and galvanostatic charge/discharge were higher than 23.4 F/g of RGO. In particular, RGO/PyrSCN 2 showed ~ seven-folder higher capacitance, ~ 120 F/g, compared to that of RGO. The higher Warburg slope of RGO/IL hybrids compared to that of RGO was indicative of the faster ion movement for the formation of the electrical double layer as shown in impedance spectra, while the emergence of redox peaks in the hybrids was responsible for the enhancement of capacitance due to the pseudocapacitance. |
| 저자 |
유병훈, 조성대, Qazi Qasim Mahmood, 김윤기, 박호석
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| 소속 |
경희대 |
| 키워드 |
Supercapacitor; Graphene; Ionic liquid; Hybrid; Electrochemistry
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| E-Mail |
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