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  • Title: Enhanced electrochemical performance with exceptional capacitive retention in Ce-Co MOFs/Ti3C2Tx nanocomposite for advanced supercapacitor applications.
    Author: Siddiqui R, Rani M, Shah AA, Siddique S, Ibrahim A.
    Journal: Heliyon; 2024 Sep 15; 10(17):e36540. PubMed ID: 39263092.
    Abstract:
    This study introduces a high-performance Ce-Co MOFs/Ti3C2Tx nanocomposite, synthesized via hydrothermal methods, designed to advance supercapacitor technology. The integration of Ce-Co metal-organic frameworks (MOFs) with Ti3C2Tx (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 Ti3C2Tx sheets. Electrochemical evaluation highlights the exceptional performance of the Ce-Co MOFs/Ti3C2Tx nanocomposite, achieving a specific capacitance of 483.3 Fg⁻1 at 10 mVs⁻1, a notable enhancement over the 200 Fg⁻1 of Ce-Co MOFs. It also delivers a high energy density of 78.48 Whkg⁻1 compared to 19 Whkg⁻1 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 cm2, coupled with a reduced charge transfer resistance (Rct) of 2.601 Ω and an equivalent series resistance (ESR) of 0.8 Ω. These findings demonstrate that the Ce-Co MOFs/Ti3C2Tx nanocomposite is a groundbreaking material, offering enhanced energy storage, conductivity, and durability, positioning it as a leading candidate for next-generation supercapacitors.
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