| 학회 | 한국재료학회 |
| 학술대회 | 2017년 봄 (05/17 ~ 05/19, 목포 현대호텔) |
| 권호 | 23권 1호 |
| 발표분야 | C. 에너지 재료 분과 |
| 제목 | SYNTHESIS OF HIGHLY UNIFORM CuCo2S4 BALL-IN-BALL NANOSPHERES WITH ENHANCED ELECTROCHEMICAL PROPERTIES |
| 초록 | In recent years, supercapacitors (SCs), an electrochemical energy storage device, have emerged as an alternative to solve excessive energy consumption and depletion of fossil fuels. Although SCs possess excellent cycling stability, high power density and specific capacitance, the performance of SCs has been restricted for their low energy density. The characteristics of SCs are strongly dependent on their electrode materials, configurations and morphologies. In the case of electrode materials, Binary transition metal sulfides (BTMSs) such as CuCo2S4 have several key advantages; rich redox reactions, the synergistic effects by interaction between diverse metal compound, better specific capacitance and electrical conductivity than single transition metal oxides. In particular, the ball-in-ball structure of the electrode material can decide diffusion/transport paths of electrons, the specific surface area and the active sites for electrochemical reactions. Herein, we successfully synthesized the CuCo2S4 novel ball-in-ball multi-shell nanostructures via uniform CuCo2-glycerate nanospheres as precursor for SCs. The structural and chemical compositions of CuCo2-glycerate and CuCo2S4 were confirmed through SEM, TEM, EDS, XRD. In addition, their electrochemical performances were investigated by CV and galvanostatic charge/discharge measurements. |
| 저자 | 이영훈, 강봉균, 곽성훈, 김민섭, 이철우, 최형욱, 윤대호 |
| 소속 | 성균관대 |
| 키워드 | supercapacitors; ball-in-ball; Binary transition metal sulfides |
