Large-scale hydrogen storage may be possible underground in sub-bituminous seams (black, pictured).
PHOTO: STEVE MCCUTCHEON/MINDEN PICTURES
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Large-scale hydrogen storage may be possible underground in sub-bituminous seams (black, pictured).
PHOTO: STEVE MCCUTCHEON/MINDEN PICTURES
Hydrogen is a zero-carbon fuel that is particularly difficult to store because of its high diffusivity in many materials. Iglauer et al. found that hydrogen adsorbs onto subbituminous coal and suggest using coal seams for large-scale hydrogen storage. The authors made these measurements in the laboratory under various pressure and temperature conditions. The gas adsorption substantially increased with pressure, suggesting that deeper coal seams might be the best candidates for storage if this adsorption behavior is validated in the field.
Geophys. Res. Lett. 10.1029/2021GL092976 (2021).
