Here, three different materials were prepared containing high-conductivity multi-walled carbon nanotubes (MWCNTs), a high power density of mesoporous ordered silica SBA-15 (due to the high specific surface area), and nanoporous walls to improve the energy and power densities of energy storage devices. Thus, a hybrid composite of SBA-15 and MWCNTs was fabricated. The new composite of SBA-15/CNTs was decorated with a tri-metal organic framework, NiCoCu-BTC (1,3,5-benzenetricarboxylic acid, H₃BTC), via a simple, low-cost, and one-step solvothermal method. The structural features of the prepared nanomaterial play a key role in increasing the number of active sites and accelerating ion/electron transfer. Also, the trimetallic organic framework (due to its different oxidation states) provides richer redox reactions than monometallic and bimetallic ones to produce a high energy density material. This nanocomposite was used as an efficient electrode material in the fabrication of high-performance supercapacitors. The prepared nanocomposite demonstrated excellent electrochemical performance with a high specific capacity of 868 C g⁻¹ (2067 F g⁻¹) at a current density of 1.0 A g⁻¹, good rate capability (563 C g⁻¹ at 10 A g⁻¹), and high cycling durability. The excellent electrochemical performance of SC@NCC-BTC suggests that this composite is a promising candidate for energy storage applications.

中文翻译：

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MWCNT-介孔二氧化硅纳米复合材料插入多面体金属-有机骨架作为储能装置的高级混合材料

在这里，制备了三种不同的材料，包含高导电性多壁碳纳米管 (MWCNT)、高功率密度的介孔有序二氧化硅 SBA-15（由于高比表面积）和纳米多孔壁以提高能量和功率能量存储设备的密度。因此，制造了 SBA-15 和 MWCNTs 的混合复合材料。SBA-15/CNTs 的新复合材料用三金属有机骨架 NiCoCu-BTC（1,3,5-苯三甲酸，H ₃ BTC）装饰，通过一种简单、低成本的一步溶剂热方法。制备的纳米材料的结构特征在增加活性位点数量和加速离子/电子转移方面起着关键作用。此外，三金属有机骨架（由于其不同的氧化态）提供比单金属和双金属更丰富的氧化还原反应，以产生高能量密度材料。这种纳米复合材料被用作制造高性能超级电容器的有效电极材料。制备的纳米复合材料表现出优异的电化学性能，在 1.0 A g ^-1的电流密度下具有 868 C g ^-1 (2067 F g ^-1 )的高比容量，良好的倍率性能（563 C g ^-1在 10 A g ^{- 1})，以及高循环耐久性。SC@NCC-BTC 优异的电化学性能表明该复合材料是储能应用的有前途的候选者。