MoS2/CoS2 heterostructures embedded in N-doped carbon nanosheets towards enhanced hydrogen evolution reaction
Authors:
- Kang Ji,
- Katarzyna Matras-Postolek,
- Ruixia Shi,
- Ling Chen,
- Quande Che,
- Junpeng Wang,
- Yunlong Yue,
- Ping Yang
Abstract
MoS2/CoS2 heterostructures on nitrogen-doped carbon nanosheets as an efficient electrocatalyst for hydrogen evolution reaction (HER) are prepared using zeolitic imidazolate frameworks-67 as precursors. Two dimensional (2D)/2D MoS2/CoS2 heterostructures consist of layered CoS2 and MoS2. The (210) facet of CoS2 and the (002) facet of MoS2 contacted vertically resulted in improved electrons and holes transfer in the interface. The ratios of CoS2/MoS2 plays an important role to get high performance (CoS2/MoS2/NC-n%, e.g. n = 20, 25, 30, 35 wt%). Meanwhile, sample CoS2/MoS2/NC-25% revealed the best HER activity, sug-gesting the sample has the largest number of active sites and the fastest electron transfer rate. In addition, sample CoS2/MoS2/NC-25% exhibited the lowest onset potential of 51 mV, the lowest potential of 215 mV at 10 mA cm−2, and the smallest Tafel slope of 80.0 mV dec−1. The result is utilizable for the construction of heterostructures with excellent HER performance.
- Record ID
- CUT23d7790387f44b3fb0c9582740985b3f
- Publication categories
- ;
- Author
- Journal series
- Journal of Alloys and Compounds, ISSN 0925-8388, e-ISSN 1873-4669
- Issue year
- 2022
- Vol
- 891
- Pages
- [1-10]
- Article number
- 161962
- Other elements of collation
- fot.; schem.; tab.; wykr.; Bibliografia (na s.) - 9-10; Bibliografia (liczba pozycji) - 53; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 891
- Keywords in English
- MoS2, CoS2, heterostructures, electrochemistry
- ASJC Classification
- ; ; ;
- DOI
- DOI:10.1016/j.jallcom.2021.161962 Opening in a new tab
- URL
- https://www.sciencedirect.com/science/article/pii/S0925838821033715 Opening in a new tab
- Language
- eng (en) English
- Score (nominal)
- 100
- Score source
- journalList
- Score
- Publication indicators
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT23d7790387f44b3fb0c9582740985b3f/
- URN
urn:pkr-prod:CUT23d7790387f44b3fb0c9582740985b3f
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.