The　Fe-Mn　based　Li-rich　materials,　Li1-x(FeyMn1-y)(1-x)O-2,　are　highly　expected　to　be　potential　cathode　materials　for　lithium　ion　batteries　due　to　high　capacity,　good　safety,　environmental　friendliness,　and　low　cost.　A　simple　synthesis　route,　the　modified　Pechini　method,　was　employed　to　synthesize　the　nanosized　Fe-Mn　based　Li-rich　materials　with　excellent　electrochemical　performance.　The　structure,　particles　morphology,　and　dispersibility　of　the　obtained　materials　are　examined　by　X-ray　diffraction　(XRD),　scanning　electron　microscope　(SEM)and　transmission　electron　microscope　(TEM).　The　crystallinity　and　surface　area　of　materials　strongly　depend　on　the　calcination　temperature.　The　samples　calcined　at　low　temperature　with　small　particle　size　show　high　discharge　capacity,　but　fast　capacity　fading　due　to　the　poor　crystallinity.　In　order　to　solve　this　contradiction,　the　sample　Li1.26Fe0.22Mn0.52O2　was　calcined　at　low　temperature　(500　degrees　C),　then　heated　at　high　temperature　for　a　short　time.　It　possesses　both　small　particle　size　and　good　crystallinity,　exhibiting　high　discharge　capacity　of　about　200　mAh　g(-1)　and　improved　cycleability.　The　rate　performance　is　excellent　that　the　discharge　capacity　is　about　140　mAh　g(-1)　(1　C)　and　110　mAh　g(-1)　(2　C),　respectively.　(C)　2013　Elsevier　Ltd.　All　rights　reserved.