| 학회 | 한국재료학회 |
| 학술대회 | 2008년 가을 (11/07 ~ 11/07, 차세대융합기술연구원) |
| 권호 | 14권 2호 |
| 발표분야 | 에너지환경재료 |
| 제목 | Electrochemical Properties of Immobilized MnO2-CNFs Composite Electrode for Supercapacitors |
| 초록 | Electrochemical capacitors are novel charge-storage devices of high power energy density, which exhibit excellent reversibility and a long cycle life. In recent years, electrochemical capacitors have attracted much attention for their higher power density compared to batteries and higher energy density compared to common capacitors. Activated carbons with very large surface area have a feature of high capacitance per weight. However, such activation methods tend to suffer from low yield below 50%, low in electrode density and capacitance per volume. CNFs (Carbon NanoFibers) have high surface area polarizability high electrical conductivity and chemical stability, as well as extremely high mechanical strength and modulus, which make them an important material for electrochemical capacitors. MnOx are considered as hopeful materials of faradaic pseudocapacitors not only due to the low cost but also their greater environmental compatibility than other metal oxides. The electrochemical properties of MnO2-CNFs electrodes were studied for the electrochemical capacitor applications. CNFs synthesized on directly Ni foam without an additional step at temperatures between 450℃ and 550℃ using ethylene gas. CNFs was composed of nanofibers with diameter ranging from 40 to 60 nm. The performance characteristic was evaluated using cyclic voltammetry and charge-discharge test in an aqueous solution. |
| 저자 | 민형섭1, 김상식2, 이전국2 |
| 소속 | 1한국과학기술(연), 2고려대 |
| 키워드 | Carbon NanoFibers; MnO2; Supercapacitor |
