Large-scale synthesis of Li3V2(PO4)3@C composites by a modified carbothermal reduction method as cathode material for lithium-ion batteries

摘要: Carbon coated Li3V2(PO4)3 composites were prepared by a modified carbothermal reduction method. The method has the advantages of being simple and scalable, while whole synthesis is devoid any reducing/protecting gases, therefore, it can be directly carried out in muffle furnace. obtained Li3V2(PO4)3@C have particles sizes from 500 nm to 3 μm, with homogeneous carbon coating layer thickness about 7 nm. battery based on this cathode exhibits specific discharge capacity 130.9 mA h g−1 at 0.1 C, an initial 102.8 even 10 C almost keeps 96.6% retention after cycles. performance enhancement ascribed robust structure merits synthesized Furthermore, as-developed potential expanded other lithium transition-metal phosphates (such as iron phosphate), which conventionally need sintered reductive or protective atmospheres.