Siddiqui Rabia, Rani Malika, Shah Aqeel Ahmed, Siddique Sadaf, Ibrahim Akram
Department of Physics, The Women University, Multan, 66000, Pakistan.
Wet Chemistry Laboratory, Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi, 75270, Pakistan.
Heliyon. 2024 Aug 20;10(17):e36540. doi: 10.1016/j.heliyon.2024.e36540. eCollection 2024 Sep 15.
This study introduces a high-performance Ce-Co MOFs/TiCT nanocomposite, synthesized via hydrothermal methods, designed to advance supercapacitor technology. The integration of Ce-Co metal-organic frameworks (MOFs) with TiCT (Mxene) yields a composite that exhibits superior electrochemical properties. Structural analyses, including X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM), confirm the successful formation of the composite, featuring well-defined rod-like Ce-Co MOFs and layered TiCT sheets. Electrochemical evaluation highlights the exceptional performance of the Ce-Co MOFs/TiCT nanocomposite, achieving a specific capacitance of 483.3 Fg⁻ at 10 mVs⁻, a notable enhancement over the 200 Fg⁻ of Ce-Co MOFs. It also delivers a high energy density of 78.48 Whkg⁻ compared to 19 Whkg⁻ for Ce-Co MOFs. Remarkably, the nanocomposite shows outstanding cyclic stability with a capacitance retention of 109 % after 4000 cycles and electrochemical surface area (ECSA) of 845 cm, coupled with a reduced charge transfer resistance (R) of 2.601 Ω and an equivalent series resistance (ESR) of 0.8 Ω. These findings demonstrate that the Ce-Co MOFs/TiCT nanocomposite is a groundbreaking material, offering enhanced energy storage, conductivity, and durability, positioning it as a leading candidate for next-generation supercapacitors.
本研究介绍了一种通过水热法合成的高性能Ce-Co金属有机框架材料/ TiCT纳米复合材料，旨在推动超级电容器技术的发展。Ce-Co金属有机框架材料（MOFs）与TiCT（MXene）的结合产生了一种具有卓越电化学性能的复合材料。包括X射线衍射（XRD）和扫描电子显微镜（SEM）在内的结构分析证实了该复合材料的成功形成，其特征是具有明确的棒状Ce-Co MOFs和层状TiCT片材。电化学评估突出了Ce-Co MOFs/TiCT纳米复合材料的优异性能，在10 mV s⁻时实现了483.3 F g⁻的比电容，相较于Ce-Co MOFs的200 F g⁻有显著提高。与Ce-Co MOFs的19 Wh kg⁻相比，它还具有78.48 Wh kg⁻的高能量密度。值得注意的是，该纳米复合材料表现出出色的循环稳定性，在4000次循环后电容保持率为109%，电化学表面积（ECSA）为845 cm，同时电荷转移电阻（R）降低至2.601 Ω，等效串联电阻（ESR）为0.8 Ω。这些发现表明，Ce-Co MOFs/TiCT纳米复合材料是一种开创性的材料，具有增强的能量存储、导电性和耐久性，使其成为下一代超级电容器的领先候选材料。
