| 학회 |
한국화학공학회 |
| 학술대회 |
2015년 가을 (10/21 ~ 10/23, 일산 KINTEX) |
| 권호 |
21권 2호, p.2127 |
| 발표분야 |
재료 |
| 제목 |
Direct growth of molybdenum selenosulfide on carbon fiber paper as a competent electrocatalyst for hydrogen evolution |
| 초록 |
Electrocatalysts for hydrogen evolution reaction (HER) have been developed to act obvious roles in the strategy of alternative energy devices for clean and sustainable energy. In this work, we describe a method to directly grow amorphous molybdenum selenosulfide (MoSexSy) films on carbon fiber paper (CFP) by using a simple hydrothermal process. We have performed a systematic control of selenium precursor concentration to investigate growth behavior of molybdenum selenosulfide, because the composition of selenium gives significant influence on the HER performance of the catalyst. Interestingly, cathodic current density from the HER on the MoSexSy/CFP exceeds that on the MoSx/CFP in the whole potential range, indicating that the alloyed catalyst effectively diminishes the energy input to activate the HER. The overpotential to reach a current density of 20 mA/cm2 is only around 178 mV on the MoSexSy/CFP electrocatalyst. In addition, the catalyst shows a Tafel slope of 42 mV/dec, revealing the Volmer-Heyrovsky mechanism of the HER. |
| 저자 |
민요셉, 신석희, Zhenyu Jin, 한승주, 고동현, Ranjith Bose
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| 소속 |
건국대 |
| 키워드 |
Hydrogen evolution |
| E-Mail |
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| 원문파일 |
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