The ability of a supercapacitor to store energy is closely tied to the amount of surface area available for electroactive reactions. Using 1D nanostructure material not only allows for larger specific surface area compared to that of other nanostructures, but also provides a direct path for the movement of electrons, acting like a “freeway” in the axial direction. Considering the benefits herein, we report the synthesis of Co₂P₂O₇ nanofibers as an electrode material for supercapacitor application using a facile and industrially applicable electrospinning method followed by calcination. The resulting nanofibers have a continuous, uniform, and web-like structure with many small pores, which gives high specific surface area of 234.499 m² g⁻¹. This high surface area improves the interaction between the Co₂P₂O₇ nanofibers electrode and 3 M KOH electrolyte, thereby enhancing the electrochemical properties of the material. The prepared Co₂P₂O₇ nanofibers electrode has a high specific capacity of 270.7 C g⁻¹ at a high current density 80 A g⁻¹ and good stability of 84.7 % after 3000 continuous cycles. Furthermore, an asymmetric supercapacitor (ASC) device was fabricated using carbon nanofibers (CNF) as another electrode material. The energy density 27.8 Wh kg⁻¹ and power density 1.89 kW kg⁻¹ of ASC at a current density of 2 A g⁻¹ suggests that Co₂P₂O₇ nanofibers could be a viable option as an electrode material for supercapacitors.

超级电容器储存能量的能力与可用于电活性反应的表面积密切相关。使用一维纳米结构材料不仅比其他纳米结构具有更大的比表面积，而且还为电子的运动提供了直接路径，在轴向上起到了“高速公路”的作用。考虑到此处的好处，我们报告了 Co₂P₂O₇纳米纤维的合成作为超级电容器应用的电极材料，使用简便且工业上适用的静电纺丝方法，然后进行煅烧。所得纳米纤维具有连续、均匀的网状结构，具有许多小孔，比表面积高达 234.499 m² 克^-1。这种高表面积改善了 Co ₂ P ₂ O ₇纳米纤维电极与 3 M KOH 电解质之间的相互作用，从而增强了材料的电化学性能。制备的Co ₂ P ₂ O _{7纳米纤维电极在80 A g} ^-1的高电流密度下具有270.7 C g ^{-1的高比容量}，连续循环3000次后的稳定性为84.7 %。此外，使用碳纳米纤维（CNF）作为另一种电极材料制造了非对称超级电容器（ASC）装置。能量密度27.8 Wh kg ⁻¹和功率密度1.89 kW kg^{-1的 ASC 在 2 A g -1}的电流密度下表明 Co ₂ P ₂ O ₇纳米纤维作为超级电容器的电极材料可能是一个可行的选择。