Zeolite ۴A/Sr/Activated Carbon Nanocomposite Electrodes for High-Performance Supercapacitors

The increasing demand for efficient energy storage systems has highlighted the importance of developing high-performance supercapacitors. In this study, a nanocomposite-based supercapacitor was fabricated using hydrothermally synthesized Zeolite ۴A combined with strontium and activated carbon. The structural and morphological characteristics of the synthesized materials were analyzed using SEM, XRD, FT-IR, TEM, and XPS techniques, confirming the successful formation of the composite. The electrochemical performance was evaluated by cyclic voltammetry and galvanostatic charge–discharge tests. The optimized electrode exhibited a high specific capacitance of ۳۸۷ F/g and excellent cycling stability, maintaining ۸۲.۵% of its initial capacitance after ۵۰۰۰ charge–discharge cycles. Moreover, a two-electrode supercapacitor assembled from the prepared material successfully powered a white LED for approximately ۲۰۰ seconds, confirming its efficiency and practical applicability. These findings indicate that the Zeolite ۴A/Sr/Activated Carbon nanocomposite is a promising material for advanced electrochemical energy storage applications.

کلیدواژه ها:

Electrode ، Supercapacitor ، Activated Carbon/Sr/۴A ، Electrochemical performance