Background:　An　important　aspect　of　energy　conversion　and　storage　technology　is　primarily　based　on　the　electrocatalytic　oxygen　evolution　process　(OER).　Method:　Here,　we　present　the　newly　designed　synthesis　of　an　improved　variety　of　WCuCo-CeO2-MnO2-R-3　nanocomposites,　to　enhance　OER　by　incorporating　the　reduced　graphene　oxide　(rGO),　and　SMAO　of　W,　Cu,　and　Co　with　the　nanorods　of　CeO2-MnO2　materials.　Interestingly,　the　higher　density　of　SMAO　(W,　Cu,　and　Co),　atomic　utilization　and　electron　transfer　layer　of　rGO　influenced　the　CeO2-MnO2　nanorods　with　remarkably　superior　electrocatalytic　OER　activity.　Significant　findings:　This　makes　WCuCo-CeO2-MnO2-R-3　achieve　10　mA　cm-2　with　an　overpotential　of　275　mV　and　a　lower　Tafel　slop　of　64.46　mV　dec-1.　The　higher　number　of　SMAO　(W,　Cu,　and　Co)　species　close　to　the　catalyst　surface　served　as　potential　active　sites　assembly　to　enhance　the　OER　activity　by　improving　the　chemical　and　electrochemical　steps　during　the　OER　process.　The　chronoamperometry　test　revealed　that　the　WCuCo-CeO2MnO2-R-3　nanocomposite　is　not　degrade　in　a　1　M　KOH　solution　for　24　h,　and　it　is　stable　up　to　2000　CV　cycles.　In　order　to　create　very　effective　catalysts　for　OER,　the　DFT　theoretical　results　shed　light　on　the　connection　between　the　catalytic　characteristics　of　metal　oxide　structures　and　their　inherent　electronic　configuration.