Li-rich　layered　cathode　material　Li[Li0.2Ni0.2Mn0.6]O-2　was　modified　by　manganese　oxide　coating　via　a　simple　deposition　and　heat-treatment　process.　The　HRTEM　images　and　the　XPS　analysis　demonstrated　that　the　surface　of　Li[Li0.2Ni0.2Mn0.6]O-2　was　covered　by　continuous　manganese　oxide　layer,　with　about　10　nm　thickness.　The　electrochemical　performance　is　improved　greatly,　especially　the　rate　capability.　The　composite　coated　with　4　wt　%　manganese　oxide　showed　high　reversible　capacity　of　210　mAh　g(-1)　after　50　cycles　at　2　C　(400　mA　g(-1)),　compared　with　77　mAh　g(-1)　of　the　pristine.　It　is　believed　that　surface　modification　of　Li[Li0.2Ni0.2Mn0.6]O-2　with　manganese　oxide　coating　exhibits　a　convenient　approach　for　a　large-scale　production.　(C)　2010　The　Electrochemical　Society.　[DOI:　10.1149/1.3496402]　All　rights　reserved.