In　this　study,　nanosized　Li1.26Fe0.22Mn0.52O2　are　modified　with　conductive　RuO2　by　using　the　surface　basicity　of　Li-rich　materials　in　aqueous　solution　to　induce　a　chemically　deposit　of　Ru3+.　No　additional　precipitant　is　added.　After　heat-treatment,　RuO2　modifies　the　surface　of　nano-particles　verified　by　Energy　Dispersive　Spectrometer　(EDS)　and　X-ray　photoelectron　spectroscopy　(XPS).　The　deposition　process　accompanies　chemical-delithium　activation　of　Li2MnO3　component.　As　a　result,　the　intensity　of　superlattice　peaks　distinctly　reduces　monotonously　in　XRD　patterns.　And　the　electrode　performances　about　the　initial　coulombic　efficiency,　the　capacity　and　rate　capability　are　improved　greatly.　In　addition,　for　RuO2　modified　samples,　a　new　discharge　plateau　around　2.8　V　appears,　which　is　ascribed　to　spinel-like　structure,　enhancing　the　electrochemical　activity　of　electrode.　This　facile　modification　method　adopted　in　the　work　can　be　feasible　and　beneficial　toward　advanced　Li-rich　cathode　materials.　(C)　2016　The　Electrochemical　Society.　All　rights　reserved.