金屬有機框架（metal-organic framework, MOF）材料是一種由有機配位體和金屬原子組裝而成的多孔材料，具有比表面積大、結構多樣性以及可調整的孔徑等優勢而常用於製備電極材料，電極材料的奈米形貌對於電化學表現有顯著的影響，因此在本研究中我們製備不同形貌的鈷基zeolitic imidazolate framework-67（ZIF-67），包括十二面體、立方體和片狀結構，將其透過硫化和碳化製程成功製備不同形貌的硫化鈷／碳複合材料。透過三電極測試，片狀硫化鈷／碳複合材料樣品具有833.33 F/g的優異比電容以及46%的最佳電容保留率。

Metal-organic frameworks (MOFs) are composed of organic ligands and metal ions or metal clusters. They have highly porous structures, large specific surface areas, tunable pore sizes, and adjustable functionality. Because of their unique nanostructures, they are often used for fabricating electrode materials. It is said that the morphologies of electrode materials have great influence on the behavior of electrochemical performance. Therefore, we synthesized cobalt based zeolitic imidazolate framework-67 (ZIF-67) with different morphologies, including polyhedrons, cubes, and sheets. After carefully sulfurization and carbonization process, the cobalt sulfide/carbon hybrid materials were obtained. Through the three-electrode measurement, the sheet-like cobalt sulfide/carbon materials delivered the highest specific capacitance (833.33 F/g) and retention (~46%). Therefore, our simple strategy for fabrication of controlling morphologies of electrode materials paves the way for future applications in high-performance energy storage systems.