New 25 kW diesel reactor converts fuel into hydrogen for ships at sea

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🗞️ Driving the news: Germany’s Fraunhofer Institute for Microengineering and Microsystems (IMM) has developed a diesel reformer for a fuel-cell system designed to generate 25 kilowatts of electricity for ships
• The technology converts onboard diesel into hydrogen-rich gas, which is processed and fed into a fuel cell, eliminating the need to store hydrogen in separate tanks
• Researchers are expected to present the system at the Hydrogen Technology World Expo in Hamburg from October 20–22, 2026

🔭 The context: The system was developed through the DIMARIT research project, funded by Germany’s Central Innovation Program for SMEs
• By integrating fuel reforming with fuel-cell power generation, the technology aims to address the space and storage challenges associated with hydrogen-powered vessels. Researchers are also exploring whether suitable synthetic diesel fuels could be used as alternatives to conventional diesel.

🌍 Why it matters for the planet: Fuel cells generate electricity without combustion at the point of use, but a diesel-based system still relies on fossil fuel and produces carbon emissions during reforming and across the fuel lifecycle
• Its environmental benefits will depend on overall efficiency, emissions controls and whether lower-carbon synthetic fuels can be used sustainably

⏭️ What’s next: The team is investigating heat management and reliable operation under changing conditions
• Potential applications include ships, military command and surveillance vehicles, and field camps, where quieter operation and lower heat signatures could be advantageous
Further testing would be needed to establish real-world performance and commercial viability.

💬 One quote: “Compared with engine-driven diesel generators, the system requires fewer large moving parts and can reduce acoustic and thermal signatures,” the research team said

📈 One stat: 25 kW — the electrical output the diesel reformer–fuel-cell system is designed to deliver for maritime applications

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