Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.266
Publication date: 16th December 2024
The electrochemical conversion of nitrogen (N₂) to ammonia (NH₃) represents a crucial advancement toward sustainable ammonia synthesis. With ammonia being essential for fertilizers and numerous industrial processes, the development of efficient and environmentally friendly production methods is of global importance. Traditional Haber-Bosch synthesis is energy-intensive and carbon-emitting, highlighting the need for green alternatives such as electrochemical methods.
Efficient nitroconversion requires a carefully optimized interplay between the electrocatalyst, electrode design, and electrochemical reactor configuration. This study introduces an innovative approach that integrates solid proton-conducting materials into a temperature-controlled electrochemical cell, designed to operate under moderate thermal conditions for enhanced reaction kinetics and stability. The cell features heated end plates for precise temperature regulation, supporting a variety of catalytic processes.
The modular design of the cell allows flexibility and adaptability across different configurations, enabling its use not only for electrochemical nitroconversion but also for other electrocatalysis applications involving gaseous substrates, such as CO2 electrolysis. The cell can accommodate a range of membranes and solid electrolytes with varying thicknesses and can be operated in both catalyst-coated membrane (CCM) and catalyst-coated substrate (CCS) modes.
The performance of the cell was evaluated in both N2R and CO2 reduction (CO2R) modes. This benchmarking approach was used to verify the functionality of the anode and assess overall cell performance. Ammonia formation was observed in small quantities during nitroconversion using metallic and organic catalyst systems, confirming the system’s capabilities. This work establishes a versatile platform for advancing N₂R research, with insights for optimizing cell design and operational strategies.
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