AI Article Synopsis
- Researchers developed composite cathode materials using Li3V2(PO4)3-LiVPO4F, LiFePO4-Li3V2(PO4)3, and LiFePO4-Li3V2(PO4)3-LiVPO4F through a chemical process followed by heating.
- X-ray diffraction confirmed that the resulting materials are pure phases and match the initial composition, and transmission electron microscopy showed that the different phases exist together in the composites.
- Among these, the LiFePO4-Li3V2(PO4)3-LiVPO4F composites exhibited the best electrochemical performance, achieving a capacity of 164
Article Abstract
Li3V2(PO4)3-LiVPO4F, LiFePO4-Li3V2(PO4)3, and LiFePO4-Li3V2(PO4)3-LiVPO4F composite cathode materials are synthesized through mechanically activated chemical reduction followed by annealing. X-ray diffraction (XRD) results reveal that the obtained products are pure phase, and the molar ratio of each phase in the composites is consistent with that in raw material. Transmission electron microscopy (TEM) images show that each phase coexists in the composites. The LiFePO4-Li3V2(PO4)3-LiVPO4F composites exhibit the best electrochemical performance. These composites can deliver a capacity of 164 mAh g(-1) at 0.1 C and possess favorable capacities at rates of 0.5, 1, and 5 C. The excellent electrochemical performance is attributed to the mutual modification and the synergistic effects.
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| http://dx.doi.org/10.1021/am502601r | DOI Listing |
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