MXene Hybrid Nanosheet of WS2/Ti3C2 for Electrocatalytic Hydrogen Evolution Reactionopen access
- Authors
- Tekalgne, Mahider Asmare; Do, Ha Huu; Nguyen, Tuan Van; Le, Quyet Van; Hong, Sung Hyun; Ahn, Sang Hyun; Kim, Soo Young
- Issue Date
- Oct-2023
- Publisher
- AMER CHEMICAL SOC
- Citation
- ACS OMEGA, v.8, no.44, pp 41802 - 41808
- Pages
- 7
- Journal Title
- ACS OMEGA
- Volume
- 8
- Number
- 44
- Start Page
- 41802
- End Page
- 41808
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/68843
- DOI
- 10.1021/acsomega.3c06403
- ISSN
- 2470-1343
2470-1343
- Abstract
- Designing low-cost hybrid electrocatalysts for hydrogen production is of significant importance. Recently, MXene-based materials are being increasingly employed in energy storage devices owing to their layered structure and high electrical conductivity. In this study, we propose a facile hydrothermal strategy for producing WS2/Ti3C2 nanosheets that function as electrocatalysts in the hydrogen evolution reaction (HER). WS2 provides a high surface area and active sites for electrocatalytic activity, whereas MXene Ti3C2 facilitates charge transfer. As a result, the synthesized WS2/Ti3C2 offers an increased surface area and exhibits an enhanced electrocatalytic activity in acidic media. The WS2/Ti3C2 (10%) catalyst exhibited a low onset potential of -150 mV versus RHE for the HER and a low Tafel slope of similar to 62 mV dec(-1). Moreover, WS2/Ti3C2 (10%) exhibited a double-layer capacitance of 1.2 mF/cm(-2), which is 3 and 6 times greater than those of bare WS2 and Ti3C2, respectively. This catalyst also maintained a steady catalytic activity for the HER for over 1000 cycles.
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