Nanoparticle Na₃V₂(PO₄)₃/C materials with different polyacrylonitrile contents can be successfully synthesized using precipitation method. As an energy storage material used in the production of lithium batteries which is also compared with pure of that, the Na₃V₂(PO₄)₃/C not only has a larger capacity, but also has a very high cycle stability. In particular, the initial discharge capacities of the Na₃V₂(PO₄)₃/C sample annealed at 750°C containing 10 wt% of polyacrylonitrile are 130.9 and 122.2 mAh g⁻¹ at current densities of 0.5 and 1 C, respectively; the corresponding coulomb efficiencies are 97.3 and 99.5%. It is also worth noting that the capacity retention can reach as high as 92.7% for 500 cycles at 1 C.

中文翻译：

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聚丙烯腈改性的NASICON结构Na 3 V 2（PO 4）3材料的优异锂存储性能

采用沉淀法可以成功地合成出聚丙烯腈含量不同的纳米Na ₃ V ₂（PO ₄）₃ / C材料。Na ₃ V ₂（PO ₄）₃ / C作为与纯锂电池相比也用于生产锂电池的储能材料，不仅容量更大，而且循环稳定性也很高。特别地，在含有10wt％的聚丙烯腈的750℃下退火的Na ₃ V ₂（PO ₄）₃ / C样品的初始放电容量为130.9和122.2mAh g ^-1。分别在0.5和1 C的电流密度下；相应的库仑效率分别为97.3和99.5％。还值得注意的是，在1 C下进行500次循环后，容量保持率可以达到92.7％。