Mo-doped CoS with rich sulfur vacancies for electrocatalytic reduction of nitrogen to ammonia
Year: 2025
Type: conference-paper
Abstract: Improving the activation and adsorption and of N2 by catalysts is crucial for developing efficient nitrogen reduction catalysts. Doping and defect engineering are important methods for addressing these issues. Doping a certain amount of Mo in CoS is beneficial for increasing the active positions, which heightens the attachment of N2. Due to the unique structure of the sulfur vacancy, it is advantageous to weaken the N≡N bond, thus enhancing the efficiency of electrocatalysis from N2 to NH3. Therefore, this work focuses on designing a Mo-doped CoS electrocatalyst with an abundance of sulfur vacancies to enhance its electrocatalytic performance in nitrogen reduction. The Vs-Mo/CoS-8% achieves an impressive NH3 yield of 38.19 μg h−1 mgcat −1 and Faraday efficiency of 23.99% at an electrical potential of −0.45 V (vs. RHE). Furthermore, it demonstrates long-term stability for up to 24 hours. This study not only broadens the diversity of available electrocatalysts but also provides new ideas for designing efficient and stable ones.
Authors: Ze Gao, Ming Xu, Renming Liu, Daming Yang, Yating Yang, Ming Feng, Ting Wang
Language: English
Subfield: Catalysis
Field: Chemical Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4408039261