Abstract: Modified FeOCI, which was chemically prepared by Cl ion exchanging in aqueous aniline solution, shows a good discharge and charge 'characteristics.In the present study, the differences between FeOCIand modified FeOCIare reported in the bahaviour of XRD, EPMAand IRspectra.The comparision of spectra for the oligomer of polyaniline and the modified FeOCIconfirms very similar structure.XRDresults show that the modified FeOCIdisplays a reversible structure changes in charge and discharge.The charge-discharge curves gave a higher discharge voltage.

Key words: FeOC1, Modified FeOCl, Layer compound, Lithium battery