One of the advanced forms of energy storage is the supercapacitor, which offers many advantages including high power density and fast charging and discharging rates. Metal–organic frameworks (MOFs), which are potential supercapacitor electrode materials, have been intensively researched. In this study, we used a simple and affordable solvothermal approach to prepare Co-based MOF films on a stainless steel substrate. Different physico-chemical techniques such as XRD, FT-IR, FESEM, EDAX, and Elemental Mapping are used for the characterization of Co-MOF thin films. XRD study suggested that the Co-MOF thin film is crystalline. FESEM analysis shows nanosheet-like morphology on stainless steel substrates. The EDAX analysis confirms the composition of the Co-MOF structure. Moreover, Co-MOF is a pseudocapacitor-type material that provides good specific capacitance of 980 F g⁻¹ at current density of 1 mA cm⁻². The results of this work provide a sustainable electrode material for excellent supercapacitor performance and may open a new route toward the production of MOF materials with excellent charge storage capabilities while being cost-effective.

超级电容器是先进的储能形式之一，它具有许多优点，包括高功率密度和快速充电和放电速率。金属有机框架（MOF）是潜在的超级电容器电极材料，已得到深入研究。在这项研究中，我们使用一种简单且经济的溶剂热方法在不锈钢基板上制备钴基 MOF 薄膜。不同的物理化学技术，如 XRD、FT-IR、FESEM、EDAX 和元素图谱可用于 Co-MOF 薄膜的表征。 XRD 研究表明 Co-MOF 薄膜是结晶的。 FESEM 分析显示不锈钢基材上呈现纳米片状形态。 EDAX 分析证实了 Co-MOF 结构的组成。此外，Co-MOF是一种赝电容器型材料，在1 mA cm ^-2的电流密度下提供980 F g ^-1的良好比电容。这项工作的结果提供了一种具有优异超级电容器性能的可持续电极材料，并可能为生产具有优异电荷存储能力且具有成本效益的MOF材料开辟一条新途径。