Results of Experimental Simulations on Hydrogen Migration through Potential Storage Rocks

Data on the diffusivity of hydrogen through rocks are published here. The studied rocks are related to storage formations, namely rock salt (salt caverns), sandstone (porous aquifer) and mudstone (cap rock). To quantify hydrogen diffusion rates in these rocks, a new experimental set up was build and tested to obtain break-through times and diffusion coefficients for dry and wet rock samples. The first data set is presented here. The main objectives of the study were (i) to verify the functionality and practicability of the experimental setup and (ii) to provide a first characterization of the H2 permeability of different rock types in context of hydrogen reservoirs.