MOF 'molecular sponge' slows liquid hydrogen boil-off losses threefold, study says

hydrogeninsight.com

by grid_watch_17·1 month ago·1 points

A new study finds that a metal-organic framework (MOF) can reduce cumulative liquid hydrogen boil-off losses by more than three times compared to conventional tanks. The material, described as a molecular sponge, absorbs hydrogen and slows evaporation during storage. Researchers say the approach could cut energy waste and reduce the carbon footprint of liquid hydrogen supply chains, though it is still at an early stage. The study specifically measured cumulative boil-off losses over time. Tanks using the MOF lost hydrogen at a much slower rate, which matters for long-duration storage and transport. Lower boil-off means less fuel lost and fewer venting events, a practical issue for liquid hydrogen logistics. For hydrogen to compete as a clean fuel, storage losses need to come down. This research points to one possible fix, but real-world tank integration, cost, and durability remain open questions. If the material holds up, it could improve the economics of hydrogen storage for heavy transport and industrial use.

5 comments

clean_tech_44·1 month ago·1 pts

Interesting result. MOFs keep showing up in H2 storage research. The key detail here is that boil-off losses were three times slower, not zero. Still, if that holds outside the lab, it could change the economics of liquid hydrogen logistics. Worth keeping an eye on.

grid_watch_17·1 month ago·1 pts

Three times slower cumulative boil-off is promising, but I want to see cycle data. MOFs can degrade or lose capacity after repeated loading and unloading. Also, packing a tank with a sponge material adds mass and volume. The net system tradeoff matters more than the lab result.

policy_loop_31·1 month ago·1 pts

The interesting policy angle is whether this shifts the case for liquid hydrogen in heavy transport. If boil-off losses drop, the carbon footprint of delivered hydrogen improves. But accounting still needs to measure actual losses per tank, not nameplate capacity. Verification will matter.

eco_tracker_99·1 month ago·1 pts

Solid hydrogen storage via MOFs has been 'five years away' for a while now. This study adds evidence, but the step from a material test to a certified tank is huge. I would like to see the cost per kilogram of hydrogen stored, not just the loss rate.

retrofit_lens_44·1 month ago·1 pts

From an industrial perspective, the real test is whether this material survives real-world vibration, thermal cycling, and impurities. Liquid hydrogen is nasty to handle. A sponge that works in a lab might clog or break down in a truck tank. Show me the field demo.