| 학회 | 한국화학공학회 |
| 학술대회 | 2011년 봄 (04/27 ~ 04/29, 창원컨벤션센터) |
| 권호 | 17권 1호, p.535 |
| 발표분야 | 에너지 |
| 제목 | Supercapacitor electrode based on MnO2 composited of graphene and carbon nanotube |
| 초록 | Supercapacitors have been investigated for excellent power density and cycle life for the past decades. Pseudocapacitors utilize fast and reversible Faradic reactions occurring on the surface of metal oxides or conducting polymers. Among the metal oxides for pseudocapacitors electrode, manganese dioxide(MnO2) is considered as very promising materials due to high specific capacitance and low cost. However high resistance and poor cyclic stability limit potential application. In this research, MnO2 is composited of graphene and carbon nanotube in order to overcome poor electrical conductivity. Graphene and carbon nanotube serve as conductive nanosheets and nanochannel individually to enhance electron transfer. Therefore, it is expected that specific capacitance and cyclic stability are greatly enhanced due to graphene and carbon nanotube. Morphology and crystallinity of graphene and carbon nanotube composited of MnO2 were analyzed by transmission electron microscopy(TEM) and X-ray diffraction (XRD). Electrical properties and cyclic stabilities were characterized by cyclic voltammetry(CV) and charge/discharge curves. |
| 저자 | 오영준1, 김종휘2, 박승빈1 |
| 소속 | 1KAIST, 2KIER |
| 키워드 | Supercapacitor; Graphene; Carbon nanotube; Manganene dioxide |
| 원문파일 | 초록 보기 |
