ICMCTF 2026 Session TS2-ThP: Coatings and Surfaces for Renewable Energy Technology Poster Session

Ammonia plays an important role in modern agriculture and industry, serving as a vital raw material for fertilizers and sustaining societal development. Currently, industrial ammonia production is dominated by the Haber-Bosch process; however, this method is energy-intensive and responsible for significant carbon dioxide emissions. To address this drawback, electrocatalytic nitrate reduction reaction (NO₃^-RR) represents a promising sustainable way toward ammonia synthesis. Thus, the development of high-performance electrocatalysts for NO₃^-RR has been receiving tremendous attention recently. In this study, we have investigated transition metal oxide-based NO₃^-RR electrocatalyst. The electrocatalyst is synthesized using a hydrothermal process followed by thermal annealing. When operated in alkaline electrolyte, the catalyst exhibits a high faradaic efficiency of 83% and a high ammonia yield up to 0.47 mmol h^-1 cm^-2. With its excellent NO₃^-RR performance and cost-effectiveness, the synthesized catalyst is highly promising for sustainable ammonia production.