Sodium-ion hybrid capacitors (SIHCs) show great promise due to their combination of high energy-storage properties and low cost of Na resources. Yet most anodes in SIHCs suffer from sluggish Na⁺-diffusion kinetics and relatively low specific capacity, which restrict their widespread development. Herein, bowl-like VS₂ nanosheet arrays are uniformly and robustly anchored on a carbon nanofiber (CNF) substrate through a one-step solvothermal method. The bowl-like VS₂ is featured with an ultrathin thickness (several atomic layers), intrinsically metallic conductivity and an interconnected array architecture. This unique structural design can not only facilitate ultrafast Na⁺ ion-diffusion, but also suppress capacity decay of VS₂ that is caused by the conversion process below 0.3 ​V. DFT calculations demonstrate a faster Na⁺ transport rate and a lower diffusion energy barrier for the VS₂/C interface than for the VS₂/VS₂ bilayer. The quasi-solid-state SIHC full cell that integrates the CNF@VS₂ anode and the graphene sheets-wrapped carbon nanofiber (CNF@GS) cathode, displays prominent energy//power densities in the voltage range of 0.0–4.0 ​V (116 ​Wh kg⁻¹ ​at 0.4 ​kW ​kg⁻¹; 66 ​Wh kg⁻¹ ​at 40 ​kW ​kg⁻¹ based on the total mass of both electrodes), outperforming recent SIHCs.

钠离子混合电容器（SIHC）由于具有高能量存储特性和低成本的Na资源而具有广阔的前景。然而，SIHC中的大多数阳极都具有缓慢的Na ⁺扩散动力学和相对较低的比容量，这限制了它们的广泛发展。在此，碗状VS ₂纳米片阵列通过一步溶剂热法均匀而牢固地锚固在碳纳米纤维（CNF）基底上。碗状的VS ₂具有超薄的厚度（几个原子层），固有的金属导电性和相互连接的阵列结构。这种独特的结构设计不仅可以促进超快的Na ⁺离子扩散，还可以抑制VS的容量衰减₂是由低于0.3 V的转换过程引起的。DFT计算表明，与VS ₂ / VS ₂双层相比，VS ₂ / C界面的Na ⁺传输速率更快，扩散能垒更低。准固态SIHC全电池集成了CNF @ VS ₂阳极和石墨烯包裹碳纳米纤维（CNF @ GS）阴极，在0.0-4.0 V的电压范围内显示出显着的能量/功率密度（基于两个电极的总质量，在0.4 kW kg ^-1时为116瓦时kg ^-1 ;在40 kW kg ^-1时为66瓦时kg ^-1），优于最近的SIHC。