New Catalyst Boosts Ammonia Fuel Cells Power in Korea

A new catalyst in Korea has made ammonia fuel cells 2.04 watts per square centimeter more powerful. This is a big jump compared to older types.
By Newsroom | Energy, Technology |

New Catalyst Achieves World-Class Power and Durability in Ammonia-Based Fuel Cells

A high-entropy catalyst, developed by researchers at KAIST and a joint team, has significantly improved the performance and stability of ammonia-based protonic ceramic fuel cells (PCFCs). This breakthrough technology directly utilizes ammonia as fuel, overcoming limitations associated with hydrogen storage and transport. The novel catalyst architecture, integrating high-entropy oxides with alloy nanoparticles, has demonstrably enhanced both the power output and operational lifespan of these fuel cells.

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The catalyst's efficacy was highlighted by an unprecedented maximum power density of 2.04 watts per square centimeter at 700°C. This achievement represents a substantial leap for ammonia-based PCFCs. The research, detailed in 'Entropy-Modulated Oxide–Metal Catalyst Architectures for Direct Ammonia Protonic Ceramic Fuel Cells' published in Nano-Micro Letters, also leveraged detailed atomistic simulations using Density Functional Theory (DFT). These simulations revealed that the high-entropy oxide framework effectively lowers the energy barrier for ammonia decomposition.

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Broader Implications for Energy Systems

This development is seen as a critical step toward accelerating the commercialization of carbon-free power generation technologies and next-generation hydrogen energy systems. Professor Kang Taek Lee stated, "This study will serve as a catalyst for accelerating the commercialization of ammonia-based carbon-free power generation technology and next-generation hydrogen energy systems." The work offers potential solutions for the practical application of ammonia as a clean energy carrier.

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Advancing Ammonia Fuel Cell Technology

The research builds upon existing work in the field of ammonia fuel cells. Previous studies have explored various approaches to improve performance, including surface modification of anode materials with high-entropy alloys for ammonia-fed solid oxide fuel cells (SOFCs). The integration of ultra-small high-entropy alloys has also been investigated as a multi-functional catalyst for ammonia-based fuel cells.

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The current research’s focus on PCFCs and the specific integration of high-entropy oxides with alloy nanoparticles marks a distinct advancement. This work is expected to encourage further exploration and refinement of catalysts for ammonia and other hydrogen-carrying fuels.

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Keywords: Ammonia Fuel Cells, High-Entropy Catalyst, Protonic Ceramic Fuel Cells, Carbon-Free Power, Hydrogen Economy

Frequently Asked Questions

Q: What is the new development in ammonia fuel cells?
Researchers in Korea have made a new high-entropy catalyst that makes ammonia fuel cells much more powerful and last longer. This uses ammonia directly as fuel.
Q: How much more powerful are these new fuel cells?
The new fuel cells can reach a power density of 2.04 watts per square centimeter at 700°C. This is a world-class record for ammonia-based fuel cells.
Q: Why is this development important?
This breakthrough could speed up the use of clean energy from ammonia. It makes ammonia a more practical clean fuel for the future.
Q: How does the new catalyst work?
The catalyst combines special oxides with tiny metal particles. It helps break down ammonia more easily, which creates more energy.
Q: What are the next steps for this technology?
This research is expected to lead to more work on catalysts for ammonia and other clean fuels, helping to move towards carbon-free power generation.