A modified Graphite felt cathode have been obtained by pretreatment of H2O2 and modification of transition metal oxide(Ce O2).The results indicated that H2O2 pretreatment increased the oxygen-containing groups on the surface of graphite felt and improved the surface hydrophilicity,which helped to the deposition of Ce O2,and X-ray diffraction(XRD) showed that the Ce O2 deposited on the surface of graphite felt was a typical fluorite structure.The EIS and CV analysis indicated a decrease of the charge transfe...