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3D printing electrodes for electrochemical nitrate to ammonia conversion: Towards a scalable preparation of cathodes for nitrate reduction electrolyzers


Ammonia is a fundamental molecule to produce fertilizers. It is one of the largest human-synthesized chemicals. Most of the ammonia is produced by the well-known Haber-Bosch (H-B) process, that is an energy-intensive industrial process, consuming around 1 to 2% of the worldwide energy output, and is responsible for large emission of greenhouse gases in the form of CO2. Therefore, alternative ways of producing ammonia with less environmental impact are urgently needed. Another very serious environmental problem is the nitrate contamination of water and soil, with dire consequences for aquatic ecosystems and human health. Reducing nitrate levels in groundwaters is paramount and is in line with the strategy of the European commission to preserve the balance of the ecosystem. To address these problems, electrochemical nitrate to ammonia conversion emerges as an ideal alternative, since nitrate pollution can be effectively reduced in waters, at the time that ammonia is produced on a decentralized scale. In this sense, RedNitro3D takes a step forward in solving these problems, by providing a viable strategy to reduce nitrate pollution, and at the same time take advantage of this process to obtain ammonia as a value-added product, generating profit, and enhancing the sustainability of the process. Thus, combining the electrochemical nitrate to ammonia conversion with the advances in 3D printing technology, a scalable method to prepare cathodes for electrolyzers for nitrate to ammonia conversion is proposed in RedNitro3D. The project will be implemented by following three main objectives: i) benchmarking state-of-the-art electrocatalysts, ii) integrating those electrocatalyst in a printable FDM filament to produce 3D printed cathodes, and iii) the design and implementation of a 3D printed electrolyzer containing the electrodes prepared previously. This project persues to achieve the revalorization of waste, and paves the way towards a circular economy.


Net EU contribution
€ 166 278,72
Antoninska 548/1
601 90 Brno Stred

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Jihovýchod Jihomoravský kraj
Activity type
Higher or Secondary Education Establishments
Other funding
No data