Download file (2.61MB)
Download as zip (2.23MB)

コレクション

引用

説明:

The hydrogen evolution reaction (HER) is an important phenomenon in water splitting. Consequently, the development of an active, earth-abundant, and inexpensive HER catalyst is highly desired. MoS2 has drawn considerable interest as an HER catalyst because it is composed of non-precious metal and exhibits high catalytic activity in the nanosheet form. In this study, size-controlled MoS2 particles were synthesized by ball milling. The as-prepared samples exhibited significantly enhanced electrochemical and catalytic properties compared to those of pristine bulk MoS2. Furthermore, the HER activity improved further upon the introduction of graphene into the as-prepared ball-milled samples. In particular, the MoS2 sample ball-milled for 12 h mixed with graphene exhibited optimal performance, showing an overpotential (160 mV at 10 mA cm−2) that was ~335 mV lower than that of pristine bulk MoS2. The superior catalytic activity was ascribed to the exposed edge sites, sulfur vacancies, and 1T phase of MoS2, as well as the noteworthy fortifying effect of the electronically conductive flexible material, graphene. The results provide a promising strategy for its application as an efficient and stable HER catalyst.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: Molybdenum disulfide, hydrogen evolution reaction, electrocatalyst, edge site, 1T phase, sulfur vacancy

刊行年月日: 2024-12-31

出版者: Taylor & Francis

掲載誌:

• Science and Technology of Advanced Materials (ISSN: 14686996) vol. 25 2359360

研究助成金:

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.4531

公開URL: https://doi.org/10.1080/14686996.2024.2359360

関連資料:

その他の識別子:

連絡先:

更新時刻: 2024-06-04 08:30:23 +0900

MDRでの公開時刻: 2024-06-04 08:30:23 +0900