| 학회 | 한국화학공학회 |
| 학술대회 | 2019년 가을 (10/23 ~ 10/25, 대전컨벤션센터) |
| 권호 | 25권 2호, p.1532 |
| 발표분야 | 에너지 환경 (Energy and Environment) |
| 제목 | Fabrication and Characterization of VO x /Graphene Electrode for Supercapacitor |
| 초록 | Although the graphene is regarded as a promising ideal material for the electrode of the supercapacitor, its electrochemical performance is still less enough to satisfy the current demand raised in real applications. Here, using a home laser engraver, firstly we performed the prompt and selective reduction of the graphene oxide to produce multilayered and highly porous graphene maintaining high electrical conductivity. Subsequently, the resulting graphene was conformally decorated with pseudocapacitive thin VO x using atomic layer deposition in order to maximize electrochemical performance. We observed that various forms of VO x exist in the VO x /graphene hybrid. The hybrid was mechanically robust and showed highly improved specific capacitance (~189 F/g at 1 A/g) as compared to the graphene without VOx (~46 F/g at 1 A/g). A coin-cell supercapacitor made with these VO x /graphene hybrids functioned stably and exhibited high energy density as well as cyclic stability. We expect that our approach is accepted as one of the alternatives to produce the graphene-based electrode for various energy storage devices. |
| 저자 | 박용진 , 이규복 |
| 소속 | 충남대 |
| 키워드 | 에너지 환경 |
| VOD | VOD 보기 |
| 원문파일 | 초록 보기 |
