The hollow cobalt-iron Prussian blue analogue (Co₂HCFe) is fabricated via simple co-precipitation at room temperature through a way of dominating the molar mass of transition metal cobalt. The hollow structure nanomaterials have more active sites, larger area in contact with electrolyte, and good electrical conductivity. These advantages make Co₂HCFe exhibit excellent electrochemical performance as the electrode material of supercapacitor. At the current density of 0.5 A g⁻¹, the specific capacitance of Co₂HCFe even reaches 2526 F g⁻¹ under alkaline conditions, while remaining a capacity retention rate of 90.25% after 2000 cycles.

空心钴铁普鲁士蓝类似物（Co ₂ HCFe）通过控制过渡金属钴的摩尔质量，在室温下通过简单的共沉淀法制备。中空结构纳米材料具有更多的活性位点，与电解质接触的面积更大，并且具有良好的导电性。这些优点使得Co ₂ HCFe作为超级电容器的电极材料表现出优异的电化学性能。在0.5 A g ^-1的电流密度下，Co ₂ HCFe的比电容在碱性条件下甚至达到2526 F g ^-1，而在2000次循环后仍保持90.25％的容量保持率。