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Na‐ion batteries are promising alternatives to Li‐ion batteries. L. Q. Mai and co‐workers on page 3545 show that Na3V2(PO4)3 nanograins in a carbon nanosphere matrix exhibit the best performance due to the high sodium flux across the interface of the electrode. A novel symmetric sodium‐ion battery utilizing Na3V2(PO4)3 nanograins simultaneously for the cathode and the anode can be assembled, which...
Na3V2(PO4)3 nanograins dispersed in different carbon matrices are rationally synthesized and systematically characterized. The acetylene carbon matrix provides the best conductive networks for electrons and sodium ions, which endows Na3V2(PO4)3 stable cyclability and high rate performance. The Na3V2(PO4)3‐based symmetric sodium‐ion batteries show outstanding electrochemical performance, which is promising...
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