| 학회 | 한국공업화학회 |
| 학술대회 | 2017년 가을 (11/08 ~ 11/10, 부산 벡스코(BEXCO)) |
| 권호 | 21권 2호 |
| 발표분야 | 환경에너지_포스터 |
| 제목 | Three-dimensional MnO2 Nanowire/Carbon composites from Hemp Stem for High- Performance Supercapacitors. |
| 초록 | Abstract Here we report a facile, inexpensive, and scalable strategy for the fabrication of hierarchical porous 3D structure as electrode materials for supercapacitors based on MnO2 nanowires and hemp-derived activated carbon (HC). Vertical MnO2 wires are uniformly deposited onto the surface of HC using a one-step hydrothermal method to produce hierarchical porous structures with conductive interconnected 3D networks. HC acts as a near-ideal 3D current collector and anchors electroactive materials, and this confers a specific capacitance of 340 F g−1 at 1 A g−1 with a high rate capability (88% retention) of the 3D MnO2/HC composite because of its open-pore system, which facilitates ion and electron transports and synergistic contribution of two energy-storage materials. Moreover, asymmetric supercapacitors fabricated using 3D HC as the anode and 3D MnO2/HC as the cathode are able to store 33.3 Wh kg−1 of energy and have a power delivery of 14.8 kW kg−1. |
| 저자 | 강헌규, 최봉길 |
| 소속 | 강원대 |
| 키워드 | MnO2; supercapacitor; Nano; composite |
