| 학회 | 한국재료학회 |
| 학술대회 | 2017년 봄 (05/17 ~ 05/19, 목포 현대호텔) |
| 권호 | 23권 1호 |
| 발표분야 | C. 에너지 재료 분과 |
| 제목 | 3D structured MnCo2S4@Reduced graphene oxide nanocomposites for hybrid supercapacitor application |
| 초록 | Recently, supercapcitors (SCs) classified as electric double-layer capacitor (EDLC) and pseudocapacitor is receiving attention due to high power density, high electric conductivity and cycle stability. Although reduced graphene oxide (rGO) have been studied as an EDLC materials, actual specific surface area is lower than theoretical value because of restacking. To solve these problems, 3 dimensional (3D) and hybrid graphene based SCs have been developed. Transition-metal sulfides studied as pseudocapacitors are being recently studied because of richer redox reaction sites and high electrical conductivity than transition-metal oxides. In particular, manganese cobalt sulfide has high specific capacitance and excellent energy density due to high redox reaction. In this study, we successfully synthesized 3D structure MnCo2S4@rGO for hybrid supercapacitor electrode material through two-step process with chemical precipitation method and anion exchange. The morphology of precursor and MnCo2S4@rGO was analyzed by FE-SEM. The crystallinity of sample was confirmed by XRD. rGO were confirmed by Raman spectroscopy. And the components of as-prepared precusor were measured by FT-IR spectra. |
| 저자 | 곽성훈, 이영훈, 김민섭, 이철우, 최형욱, 강봉균, 윤대호 |
| 소속 | 성균관대 |
| 키워드 | <P>graphene; transition metal sulfide; supercapacitor; 3Dimension structure</P> |
