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Synthesis and Fabrication of Metal Cation Intercalation in Multilayered TiCT Composite CNF Electrode for Asymmetric Coin Cell Supercapacitors. | LitMetric

AI Article Synopsis

Article Abstract

TiCT has attracted considerable attention from researchers in energy storage due to its unique structure and beneficial surface functional group characteristics. Recent studies have focused extensively on developing TiCT composites to create potential electrode materials for energy storage applications. Carbon nanofiber is often combined with TiCT to produce high-performance functional nanocomposites, effectively harnessing the unique properties of TiCT nanosheets while ensuring exceptional electrochemical behavior. This work employs an ultrasonication method to prepare a Na-TiCT/CNF electrode. Establishing a stable interlayer structure between TiCT nanosheets and cationic metal intercalation materials is crucial for expanding the interlayer spacing of TiCT and creating multidirectional stable ion transport channels. Consequently, this process exposes more active sites that are accessible to ions. At a current density of 1 A g, the resulting Na-TiCT/CNF demonstrates an impressive specific capacitance of 680.2 F g. Notably, the asymmetric supercapacitor assembled with Na-TiCT/CNF as the positive electrode and activated carbon as the negative electrode exhibits remarkable cyclic retention of 83.1% and the Coulombic efficiency of 90.5% after 10,000 cycles at 10 A g, a wide voltage window of 1.5 V, a high energy density of 102.5 W h kg, and a power density of 2963.7 W kg. The fabricated coin cell ASC devices, which include glowing red light-emitting diodes, were demonstrated in practical applications. The optimization strategy for developing Na-TiCT/CNF provides essential technical support for integrating Na-TiCT/CNF into the next generation of portable and adaptable wearable electrochemical energy storage devices.

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http://dx.doi.org/10.1021/acs.langmuir.4c02822DOI Listing

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