sPSO2 is a candidate for new commercial fuel cell technology, having higher conductivity and better structural properties than Nafion. It has a higher degree of confinement of the water in its pores, with pore size of only 14 Angstroms. We propose to measure the effect of the greater confinement on the coherent delocalization of the protons in the water, as seen in the momentum distribution of the protons, and correlate it with the conductivity in this and related materials by varying the temperature and concentration of the water.