| 학회 |
한국화학공학회 |
| 학술대회 |
2019년 봄 (04/24 ~ 04/26, 제주국제컨벤션센터) |
| 권호 |
25권 1호, p.510 |
| 발표분야 |
에너지 환경(Energy and Environment) |
| 제목 |
Transition-metal-based NiCoS/C-dot nanoflower as a stable electrocatalyst for hydrogen evolution reaction |
| 초록 |
Developments of highly efficient materials as electrocatalysts to produce hydrogen have been significant topics over the past few decades. Currently, the platinum metal group shows the best catalytic performance for the hydrogen evolution reaction (HER), but the high cost and low abundance of these materials limit their wider application. Therefore, we synthesized transition-metal-based NiCoS by the hydrothermal method where carbon dots (C-dots) act as a structure-directing agent and sulphur enhances the conductivity of the catalyst. Herein, the synthesis temperatures were changed in the range from 120 to 240 oC. Among all, NiCoS synthesized at 150 oC shows the best HER performance capabilities. In more detail, at this temperature NiCoS exhibits an onset potential of 96 mV and an overpotential of 232 mV. Especially, as-prepared NiCoS moonflower subjects to long-term stability over 20h required to produce a current density of 10 mA/cm2, making it a promising low-cost candidate for hydrogen production. |
| 저자 |
Ali Yousuf, Van-Toan Nguyen, Ngoc-Anh Nguyen, 신상호, 최호석
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| 소속 |
충남대 |
| 키워드 |
에너지 환경 |
| E-Mail |
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| 원문파일 |
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