Abstract
The olivine type LiMn0.4Fe0.6PO4 was synthesized via a new route that combining solid-state reaction with hydrothermal synthesis from Li2CO3, FeC2O4·2H2O, MnCO3 and NH4H2PO4 (at molar ratio of 5:6:4:10). The structure, particle size and surface morphology of these cathode active materials were investigated by XRD, SEM and TEM techniques. The electrochemical properties of LiMn0.4Fe0.6PO4/C as cathode in lithium-ion cells were tested via cyclic voltammetry and galvanostatic charge-discharge measurements. Phase-pure particles of size ~120 nm are prepared with a conductive, thin web of carbon surrounding them. Cyclic voltammetry shows the active voltage range of the material which consists of two pairs of redox peaks: 3.5 V corresponding to Fe 3+ /Fe
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