Completed Clean Energy Chemistry

Demonstration of Direct Ammonia Fuel Cells for Maritime Propulsion

In plain English

AI plain-English summary

Ships could soon run on ammonia instead of diesel, using a new type of fuel cell that converts the chemical directly into electricity, water, and nitrogen. This matters because the maritime sector is a major source of air pollution, particularly nitrogen oxides that harm human health and the environment. Current ammonia engines produce these pollutants. High-temperature fuel cells that split ammonia directly—without first turning it into hydrogen—offer a cleaner, more efficient alternative. The technology has been proven at small scale; this project aims to scale it up to a kilowatt-level stack suitable for real vessels. If successful, the work could create a new supply chain for clean maritime propulsion, cutting emissions from ferries, cargo ships, and port operations. It would also demonstrate a practical way to use ammonia as a dense, transportable store of renewable energy for heavy transport—a sector that batteries struggle to serve. The project combines university research on electrode optimisation with industrial development of cell fabrication, current collection, and electrical systems, targeting both on-vessel and shoreside demonstrations.

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Ammonia is a highly attractive energy vector, especially for the maritime sector. It acts as a dense and transportable store of hydrogen that offers an excellent route to enabling heavier duty transport applications to utilise renewable electricity. Fuel Cells can convert Ammonia into electrical energy without generating the nitrogen oxides that pollute our cities and ports. Additionally, utilising high temperature fuel cell technology to directly convert Ammonia offers simpler and more efficient systems. Here, we seek to implement a novel fuel cell system that has been demonstrated for direct conversion of Ammonia directly into water and nitrogen, yielding electric power. We seek to exploit anticipated advantages in terms of cost and lifetime, allowing the development of a robust and highly competitive product. This project comprises of university studies to optimise electrodes for Ammonia conversion, developing cell fabrication technology, and improving current collection to develop the technology base. The core activity will be to develop an operational stack targeting kW operation on ammonia fuel. This will be supported by developing the electrical system to work with this and developing the operational parameters demanded for successful demonstrations both on-vessel and shoreside implementations. This partnership seeks to implement direct ammonia fuel cells, establishing pathways to early markets and an important new supply chain for clean Maritime Transport.

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Related Research

Grants with similar aims, by meaning.

Fuel cell technologies for an ammonia economy
: Direct Ammonia Fuel Cells for Maritime Propulsion
Piloting Multi MW Ammonia Ship Fuel Cells
Scalable ammonia/hydrogen marine internal combustion engine architecture
Storage of Ammonia For Energy (SAFE) - AGT Pilot

Original classification

Collaborative R&D

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