Metal–organic frameworks (MOFs) are recognized as a desirable class of porous materials for energy storage applications, despite their limited conductivity. In the present study, Co-MOF-71 was fabricated as a high-performance supercapacitor electrode at ambient temperature using a fast and straightforward, one-pot cold plasma method. A supercapacitor electrode based on Co-MOF@rGO was also synthesized by adding reduced graphene oxide (rGO) during processing to increase the capacitance retention and stability after 4000 cycles from 80 to 95.4%. The Co-MOF-71 electrode provided a specific capacitance (Cs) of 651.7 Fg⁻¹ at 1 Ag⁻¹, whereas the Co-MOF@rGO electrode produced a Cs value of 967.68 Fg⁻¹ at 1 Ag⁻¹. In addition, we fabricated an asymmetric device (Co-MOF@rGO||AC) using Co-MOF-rGO as a high-rate positive electrode and activated carbon (AC) as a negative electrode. This hybrid device has a remarkable specific energy and power density. The combination of MOFs with reduced graphene oxide (rGO) in a cold plasma environment resulted in the formation of a three-dimensional nanostructure composed of nanosheets. This nanostructure exhibited an increased number of electroactive sites, providing benefits for energy storage applications.

尽管金属有机框架（MOF）的导电性有限，但它被认为是储能应用中理想的一类多孔材料。在本研究中，Co-MOF-71 使用快速、简单的一锅冷等离子体方法在环境温度下制造为高性能超级电容器电极。还通过在加工过程中添加还原氧化石墨烯（rGO）合成了基于Co-MOF@rGO的超级电容器电极，以将4000次循环后的电容保持率和稳定性从80%提高到95.4%。Co-MOF-71电极在1 Ag ^{-1下提供了651.7 Fg -1}的比电容（Cs） ，而Co-MOF@rGO电极在1 Ag ^{-1下产生了967.68 Fg -1}的Cs值。此外，我们使用Co-MOF-rGO作为高倍率正极，活性炭（AC）作为负极，制备了不对称器件（Co-MOF@rGO||AC）。这种混合装置具有卓越的比能量和功率密度。MOF 与还原氧化石墨烯 (rGO) 在冷等离子体环境中结合，形成了由纳米片组成的三维纳米结构。这种纳米结构表现出更多的电活性位点，为储能应用带来了好处。