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Bi-functional excellence of hybrid nanosheets and flower-like NF@Sm2O3/Eu2O3 composites for enhanced capacitance and water splitting efficiency
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DOI：10.1007/s11581-025-06924-8.png)
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Abstract
En 中文
In this research, an optimized sol-gel approach was employed for the preparation of pure Sm2O3, Eu2O3 and Sm2O3/Eu2O3 nanocomposites to observe its improved specific capacitance and catalytic performance. The structural and morphological analysis was performed with scanning electron microscope (SEM), confirming a hybrid flower and sheet like structure of composite material Similarly, transmission electron microscope (TEM) provided an additional support about the formation of flatter and cluster like nanomaterial. Conversely, the electrochemical excellence of pure and composite material was assessed with cyclic voltammetry (CV) that illustrated the faradaic redox reactions, with excellent specific capacitance and energy density value of 513 F/g and 17.81 Wh/kg, respectively. However, Sm2O3/Eu2O3 showed better specific capacitance value. On the other hand, Sm2O3/Eu2O3 presented an excellent hydrogen evolution reaction (HER) performance, showing lower over potential of 171 mV at 10 mA/cm(2). Moreover, composite material shown excellent Tafel slope value 77 mV/dec that may be due to its better reaction kinetics. The electrochemically active surface area (ECSA) was observed to be 2471 cm(2), showed exceptional surface activity of material. The researchers are highlighting the global impact of prepared nanocomposite in improving performance of batteries, capacitor and other energy storage system by using these materials.
Keywords:
Nanocomposite
Sol-gel methodology
Pseudo capacitive
Catalytic Efficiency
Over potential
Electrochemical active surface area
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