We request two days’ beam time on SANS2D for the study of radiation-grafted anion-exchange membranes, both dry and hydrated under different ratios of D2O/H2O. These materials are some of the most promising anion-exchange membranes for use in energy applications (such as fuel cells and water electrolysers). The collection of small-angle neutron scattering data will enhance our understanding of the mesoscale morphology of these membranes and how that contributes to their anionic conductivity under the relevant conditions to electrochemical device operation.