Fig. 2: Scattering profiles of wetted Ni3(HITP)2 electrodes.
a Comparison of the dry Ni₃(HITP)₂ electrode (solid black line) with its wetted state using pure H₂O (solid light blue line) and 1 M NaTFSI (solid orange line). The corresponding bulk electrolyte signals for H₂O and 1 M NaTFSI (aq.) are shown as blue and orange dotted lines, respectively. b Scattering profiles from the wetted electrodes with bulk liquid contributions subtracted. The inset illustrates that the shift of the stacking peak indicates an increased layer spacing upon wetting (not to scale), while deviations in the in-plane peak intensities relative to the dry MOF suggest an inhomogeneous electrolyte distribution within the pore, i.e., a higher ion concentration close to the pore walls.
