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Na3V2O2(PO4)2F (NVOPF) is a promising cathode material for sodium-ion batteries (SIBs) due to its high working voltage and theoretical capacity. However, the electrochemical performance is strongly impeded by its poor intrinsic electronic conductivity. Herein, we integrated the high flexible graphene sheets with NVOPF through a spray-drying method to re-construct its structure. The NVOPF nanocrystalline...
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