PEI
Summary
The use of iron as a low cost approach for storing hydrogen is being piloted by researchers at the ETH Zurich in Switzerland.
The approach relies on the reaction of hydrogen with natural iron ore, which extracts the oxygen from the ore to result in elemental iron and water that can then be stored for long periods with minimal losses.
Currently in the pilot, to keep the energy required for the discharging process to a minimum, the steam is generated using waste heat from the discharging reaction.
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