Sodium‐ion technology is a reliable alternative to lithium‐ion for large‐scale energy storage because of the abundance of sodium sources and low cost. In this work we report about a simple fabrication of self‐standing electrodes based on electrospun carbon nanofiber (CNF) loaded with Na 3 V 2 (PO 4 ) 3 with NASICON framework, which is a promising cathode material that has shown good electrochemical performance when its electrical conductivity is enhanced by a conductive medium. The proposed method is simple, low cost, potentially scalable to fabricate and load cathode support with active materials. The electrochemical tests confirmed the stable cycling performances and the high C‐rate capability of the NVP‐CNFs composites, with hundreds of cycles without major degradation of performances. Our work demonstrates that stable, self‐supported, long‐term performing NIB electrodes, ready to use without addition of any performance enhancer, can be obtained by using fast and cost‐efficient procedures suitable to be scaled‐up at an industrial level.

中文翻译：

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Na3V2（PO4）3支撑的电纺碳纳米纤维无纺布作为自立式Na离子电池阴极

钠离子技术是锂离子电池可靠的替代品，因为钠离子源丰富且成本低廉，因此可大规模存储能量。在这项工作中，我们报告了一种简单的自立式电极的制造方法，该电极基于带有NaASICON框架的Na 3 V 2（PO 4）3的电纺碳纳米纤维（CNF），这是一种很有前途的阴极材料，当具有良好的电化学性能时它的导电性通过导电介质增强。所提出的方法简单，成本低，潜在地可扩展以用活性材料制造和负载阴极支撑。电化学测试证实了NVP-CNFs复合材料具有稳定的循环性能和高C速率性能，可以进行数百次循环而性能不会出现重大下降。我们的工作表明，稳定，自力更生，