In the recent years, metal-organic frameworks (MOFs) and their derived mixed metal hydroxides/oxides structures have emerged as an engrossing category of functional materials with some unique properties such as high porosity and high specific surface area for energy storage applications. Here, a cathodic electrodeposition strategy was utilized to prepare a bimetallic NiCo metal-organic framework (NiCo-MOF) with flower-like morphology consisting of nanopetals onto Ni foam (NF) as free-standing electrode. Structural characterization revealed that Ni²⁺ and Co²⁺ metal ions are uniformly distributed on the deposited films on the nickel foam. Post-chemical treatment of NiCo-MOF/Ni foam electrode under basic condition (i.e. 4 M KOH) was concluded carbon coated hierarchical mixed hydroxide (i.e. C@Ni_1-xCo_x(OH)₂) structures onto Ni-foam with similar morphology as its pristine binary MOF. Both ready-to-use fabricated electrodes were characterized with various techniques of X-ray diffraction (XRD), Fourier-transform infrared (FT-IR), Field-emission scanning electron microscope (FE-SEM), Energy dispersive X-ray analysis (EDAX), Energy dispersive spectroscopy (EDS) mapping and Thermogravimetric-differential scanning calorimetry (TG-DSC). Supercapacitive behaviors of pristine NiCo-MOF/NF and its derived C@NiCo-hydroxide/NF electrodes were also measured using cyclic voltammetry (CV), galvanostatic charge/discharge, and electrochemical impedance spectroscopy (EIS) measurements in 2 M KOH as electrolyte. The C@NiCo-hydroxide/NF electrode exhibited better performance as compared to pristine sacrificial binary metallic MOF electrode, which was 1825 F g^–1 at a discharge current density of 1 A g^–1 which still preserved 66.5% of its initial capacitance even at a high-rate load of 15 A g^–1. Additionally, the C@NiCo-hydroxide/NF showed 87.6% of its capacitance at the end of 8000th cycle.

近年来，金属有机骨架（MOF）及其衍生的混合金属氢氧化物/氧化物结构已成为功能材料的一门引人入胜的类别，具有一些独特的特性，例如高孔隙率和高比表面积，用于储能应用。在这里，采用阴极电沉积策略来制备双花NiCo金属-有机骨架（NiCo-MOF），其花状形态由纳米花瓣组成，并作为独立电极在Ni泡沫（NF）上形成。结构表征表明，Ni ²⁺和Co ²⁺金属离子均匀分布在镍泡沫上的沉积膜上。在碱性条件下（即4 M KOH）对NiCo-MOF / Ni泡沫电极进行后化学处理，得出的结论是碳包覆的分层混合氢氧化物（即C @ Ni _{1- x} Co _x（OH）₂）结构上具有与原始二元MOF相似的形态的镍泡沫。两种现成的预制电极都通过X射线衍射（XRD），傅立叶变换红外（FT-IR），场发射扫描电子显微镜（FE-SEM）和能量色散X射线分析等各种技术进行了表征（EDAX），能量色散光谱（EDS）映射和热重差示扫描量热法（TG-DSC）。原始的NiCo-MOF / NF及其衍生的C @ NiCo-氢氧化物/ NF电极的超电容行为也使用循环伏安法（CV），恒电流充/放电和电化学阻抗谱（EIS）在2 M KOH作为电解质的条件下进行了测量。与原始牺牲性二元金属MOF电极相比，C @ NiCo-hydroxide / NF电极表现出更好的性能，后者为1825 F g^–1在1 A g ^–1的放电电流密度下，即使在15 A g ^–1的高速负载下仍保持其初始电容的66.5％。此外，在第8000个循环结束时，C @ NiCo-氢氧化物/ NF的电容为87.6％。