Unravelling the Electro‐Photocatalytic Water Splitting Capabilities of 2D‐Bifunctional Mo 2 S 3 ‐WS 2 Catalyst: Implications for Renewable Energy Platforms

W4412656524 · 수집 2026-10-04 18:16:38

T10030 Electrocatalysts for Energy Conversion

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DOI 제목 발행년도 저널 URL 페이지 열기 PDF URL PDF 열기 발행기관 피인용수 라이선스

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Abstract Addressing the energy crisis and environmental pollution demands the development of efficient electro‐ and photocatalysts capable of facilitating hydrogen production via water splitting. Engineering semiconductor‐based 2D heterostructures with remarkable visible‐light harvesting capability proves to be an effective approach for constructing profoundly active electro‐photocatalytic entities. This paper focuses on designing a heterostructure comprising tungsten disulphide (WS 2 ) integrated with molybdenum sesquisulfide (Mo 2 S 3 ) to increase electrocatalytic activity. Moreover, nanoengineering the 2D/2D heterostructure with varying lateral dimensions increases the density of catalytic active sites. Due to its superior geometric configuration, the polarization curves of the Mo 2 S 3 ‐WS 2 composite display outstanding characteristics as a bifunctional electro‐photocatalyst, with low overpotentials (η) of 92 mV for hydrogen evolution reaction (HER) and 310 mV for oxygen evolution reaction (OER) at a current density of 10 mA cm 2 , maintaining stability for up to 100 h. The electrolyzer achieved a current density of 1 A cm 2 with a cell voltage of 2.07 V, corresponding to a voltage efficiency of 72%. Integrating the electrolyzer with a commercial silicon solar cell enabled efficient solar‐driven water splitting, reaching a current density of ≈0.8 A cm 2 at an applied voltage of 2 V. This work provides valuable insights into the design of innovative hetero‐nanostructures with superior catalytic properties for water splitting, contributing to a sustainable energy future.

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Unravelling the Electro‐Photocatalytic Water Splitting Capabilities of 2D‐Bifunctional Mo <sub>2</sub> S <sub>3</sub> ‐WS <sub>2</sub> Catalyst: Implications for Renewable Energy Platforms

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