Abstract
The Raman spectra of Li2SO4.H2O under small DC electric fields (20, 30, 40 and 50 V) have been obtained in order to study the conduction mechanism and group vibrations for this compound. New bands have been observed at 1680 and 773 cm-1 owing to the formation of H3O+ during electrolysis. With an increase in voltage and time the stretching bands of water broaden and finally coalesce into a single band. A slight reduction in the intensity of the bending mode of water (1605 cm-1) is also noticed. These are due to the polarizability changes induced by the proton movement along the O-H . O bond, reorientation of the bonds and subsequent distortion of the lattice.
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