Abstract Porous hydrated cobalt-based metal-organic framework (HCoMOF) was prepared as high storage ultracapacitor electrode for the first time. HCoMOF showed specific capacitance of 446.6 F g−1 at 1.0 A g−1 and superior stability of 97.1% capacity retention after 2000 cycles at 2.5 A g−1 using a three-electrode configuration in 1.0 M H3PO4 aqueous electrolyte. The maximum energy density of 89.3 Wh kg−1 achieves at a power density of 431.8 W kg−1 using the current density of 1.0 mA g−1. Excellent performance attributed to the presence of micro/mesopores of particles and hydrous regions in materials that provides sufficient space for storage and electrolyte diffusion.

中文翻译：

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具有超级电容器活性的多孔钴金属有机骨架

摘要 首次制备了多孔水合钴基金属有机骨架（HCoMOF）作为高储能超级电容器电极。HCoMOF 在 1.0 A g-1 下显示出 446.6 F g-1 的比电容和在 1.0 M H3PO4 水性电解质中使用三电极配置在 2.5 A g-1 下循环 2000 次后容量保持率高达 97.1% 的优异稳定性。89.3 Wh kg-1 的最大能量密度在 431.8 W kg-1 的功率密度下使用 1.0 mA g-1 的电流密度实现。优异的性能归因于材料中存在颗粒的微孔/中孔和含水区域，为存储和电解质扩散提供了足够的空间。