High Power LiMn2O4 Hollow Microsphere Cathode Materials for Lithium Ion Batteries
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Lithiummanganeseoxide(LiMn2O4)hollowmicrosphereshavebeensynthesizedbyusingMnCO3precursorasaself-template.ThemicrostructureofthehollowmicrospheresischaracterizedbyX-raydiffractionandenvironmentalscanningelectronmicroscopy.Theelectrochemicalperformanceofthesamplesisevaluatedbycyclicvoltammetryandcharge-dischargecyc领tests.LiMn2O4hollowmicrospheresdeliverexcellentcyc领stabilityandratecapability.Theinitialdischargecapacityis61.5mAhg-1testedatarateof20C.Thecapacityretentionratioisabove87%after1200charge-dischargecycles.TheresultsindicatetheLiMn2O4hollowmicrospheresarethemostpromisingcathodematerials,whichmaybeusedinhighpowerlithiumionbatteries.
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