| 학회 | 한국재료학회 |
| 학술대회 | 2017년 봄 (05/17 ~ 05/19, 목포 현대호텔) |
| 권호 | 23권 1호 |
| 발표분야 | 4. 광전기화학반응을 통한 태양에너지 변환(Photoelectrochemical Solar Energy Conversion) |
| 제목 | Transition metal dichalcogenides for hydrogen evolution reaction |
| 초록 | Recently, MoS2 and WS2 have attracted increasing attention because of their great potential as semiconductors of electronic devices such as field-effect transistors, organic photovoltaics, memory, logic, and energy storage devices. The transition metal dichalcogenides (TMDs) were prepared by chemical vapor deposition (CVD) method or sonication process. This talk will show that two dimensional materials could be used as catalyst and electrode for hydrogen evolution reaction (HER). In case of MoS2 synthesized using CVD, we demonstrate that MoS2 can provide a low onset potential of 1 mA/cm2 at 0.17 V versus a reversible hydrogen electrode and the high photocurrent density of 24.6 mA/cm2 at 0 V for a p-type Si photocathode. In case of TMDs fabricated by sonication method, MoS2 and TiS2 exhibited the best HER performance with Tafel slopes of 94.91 and 91 mV/decade. Furthermore, nanosheet and nanodot forms of MoS2 and WS2 attract much attention. Therefore, a comparison of the characteristics of transition metal dichalcogenides nanosheets and nanodots will be discussed for their applications. Acknowledgement This research was supported by a National Research Foundation of Korea (NRF) grant provided by the Korean government (MSIP) (No. 2014R1A2A1A11051098, 2015K1A3A1A59073839). |
| 저자 | 김수영1, 응웬판탕1, 권기창2, 최석훈2, 장호원2 |
| 소속 | 1중앙대, 2서울대 |
| 키워드 | transition metal dichalcogenide; hydrogen evolution reaction |
