Na₃V₂(PO₄)₃ (NVP) is an extensively researched cathode material for the sodium-ion batteries (NIBs). Size reduction and nanocarbon coating are often used to improve its rate performance. These are strategies that have been proven highly effective for LiFePO₄ (LFP), a phosphate-based cathode material which is nowadays popular with the lithium-ion batteries. Nanocarbon coating is undoubtedly useful since NVP encounters similar external electron transport barriers as LFP. The effect of size reduction, however, remains debatable since in theory, the 3D NASICON framework of NVP is more efficient for solid state ionic diffusion than is LFP. We have undertaken the measurements of the electrochemical performance of NVP particles of different sizes, electrode compositions, active material loadings and processing conditions, for the purpose of identifying the most significant factors which determine the rate performance of NVP as a NIB cathode material.

Na ₃ V ₂（PO ₄）₃（NVP）是用于钠离子电池（NIB）的广泛研究的阴极材料。尺寸减小和纳米碳涂层通常用于改善其速率性能。这些策略已被证明对LiFePO ₄非常有效（LFP）是一种磷酸盐基正极材料，目前在锂离子电池中很受欢迎。纳米碳涂层无疑是有用的，因为NVP会遇到与LFP类似的外部电子传输壁垒。但是，减小尺寸的效果仍然值得商since，因为从理论上讲，NVP的3D NASICON框架比LFP更有效地实现固态离子扩散。为了确定决定NVP作为NIB阴极材料的速率性能的最重要因素，我们对不同尺寸，电极组成，活性材料负载和加工条件的NVP颗粒的电化学性能进行了测量。