NASICON-type (Na super ionic conductor) Na₄VMn(PO₄)₃ (NVMP) cathode material has attracted increasing attention due to its higher sodium de-/intercalation voltage, lower cost and greener resources compared with Na₃V₂(PO₄)₃. However, the poor electronic conductivity limits the exploitation of its electrochemical performance. In this work, we achieved an ultrahigh rate capable and long cycle life NVMP/C-rGO composite using the simple and scalable spray-drying technique, in which low-fraction rGO nanosheets (2.14 wt%) highly dispersed and bridged the carbon shelled NVMP nanoparticles to form an effective electron conductive network. Benefiting from this favorable nano-architecture, the elaborately designed NVMP/C-rGO composite exhibited excellent performance as cathode in sodium ion batteries, delivering reversible capacities of 105.5 mA h g⁻¹ at 1 C (1 C = 110 mA h g⁻¹) and 102.6 mA h g⁻¹ at 50 C with capacity retention of 90.6% (1 C) and 80.4% (50 C) over 500 cycles, respectively. This is the highest rate performance for Na₄VMn(PO₄)₃ materials reported so far. This work provides a practicable tactic for fabricating advanced polyanion-type cathode materials which can be commercially scale up for sodium energy storage.

NASICON型（Na超离子导体）Na ₄ VMn(PO ₄ ) ₃ (NVMP)正极材料与Na ₃ V ₂ (PO ₄ ) ₃. 然而，较差的电子导电性限制了其电化学性能的开发。在这项工作中，我们使用简单且可扩展的喷雾干燥技术实现了超高倍率和长循环寿命的 NVMP/C-rGO 复合材料，其中低分数 rGO 纳米片（2.14 wt%）高度分散并桥接碳壳 NVMP纳米粒子形成有效的电子传导网络。受益于这种有利的纳米结构，精心设计的 NVMP/C-rGO 复合材料作为钠离子电池的阴极表现出优异的性能，在 1 C 下提供 105.5 mA h g ^{-1 的}可逆容量（1 C = 110 mA h g ^-1）和102.6 毫安汞^-1在 50 C 下，500 次循环的容量保持率分别为 90.6% (1 C) 和 80.4% (50 C)。这是迄今为止报道的Na ₄ VMn(PO ₄ ) ₃材料的最高倍率性能。这项工作为制造先进的聚阴离子型阴极材料提供了一种可行的策略，该材料可以商业化用于钠储能。