Hollow electrode materials with structural advantages of large contact interface and sufficient cavity structures are significant for electrochemical energy storage. Herein, ultra-long one-dimensional zinc–manganese oxide (ZnMn₂O₄) hollow nanofibers were successfully prepared by electrospinning at an appropriate temperature (500 °C). The optimal electrode of ZnMn₂O₄ exhibited a larger specific capacitance (1026 F g⁻¹) as compared to ZnMn₂O₄ powder (125 F g⁻¹) at a current density of 2 A g⁻¹ in three-electrode configuration. Moreover, the optimal electrode of the ZnMn₂O₄ hollow nanofibers also possessed long-term cycling stability with a slight upward capacitance (100.8%) after 5000 cycles. Their higher specific capacitance and the outstanding cycle stability may be attributed to the unique 1D hollow nanostructure, which enhanced the charge transfer and improved the diffusion of the electrolyte ions at the surface. Thus, this work designed a high-performance electrode with unique hollow nanostructure that can be applied to the field of energy storage.

具有大的接触界面和足够的空腔结构的结构优点的空心电极材料对于电化学能量存储是重要的。在这里，通过在适当的温度（500℃）下静电纺丝成功地制备了超长的一维锌锰氧化物（ZnMn ₂ O ₄）中空纳米纤维。在三电极配置中，电流密度为2 A g ^-1时，ZnMn ₂ O ₄的最佳电极与ZnMn ₂ O ₄粉末（125 F g ^-1）相比，具有更大的比电容（1026 F g ^-1）。。此外，ZnMn ₂ O的最佳电极_4个中空纳米纤维还具有长期循环稳定性，在5,000次循环后具有轻微的向上电容（100.8％）。它们较高的比电容和出色的循环稳定性可归因于独特的一维中空纳米结构，该结构增强了电荷转移并改善了电解质离子在表面的扩散。因此，这项工作设计了一种具有独特中空纳米结构的高性能电极，可应用于能量存储领域。