Unstable　interface　and　thermal　property　of　LiNi(0.8)Co(0.1)Mn(0.1)O(2)have　been　two　of　the　most　serious　obstacles　to　limit　its　practical　application.　Lattice　doping　and　surface　coating　are　two　dominating　methods　to　reinforce　the　property　of　Ni-rich　cathode.　In　this　study,　Nb　was　as　a　modified　element　to　decorate　LiNi0.8Co0.1Mn0.1O2.　As　a　result,　a　concentration　gradient　of　Nb　near　the　surface　was　generated　after　the　sintering　process.　The　Nb-doped　materials　could　slightly　suppress　the　H2-H3　phase　transition　and　improve　the　stability　of　the　interface.　The　capacity　retention　at　1　C　rate　has　been　enhanced　more　than　15%　after　200　cycles,　and　the　capacity　retention　is　68.7%　at　10　C　rate　after　400　cycles.　Meanwhile,　the　rate　performance　and　thermal　stability　also　have　been　improved.