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Dr Ammar TIGHEZZA

Associate Professor

Faculty

كلية العلوم
2 A 146 Building 5
المنشورات
مقال فى مجلة
2022

Facile synthesis of hierarchical ZnS@ FeSe2 nanostructures as new energy-efficient cathode material for advanced asymmetric supercapacitors

We have effectively synthesized ZnS, FeSe2, and their nanocomposite in this study using a straightforward and affordable solvothermal process. We also investigate for the first time their ideal electrochemical performance for supercapacitors. The ZnS and FeSe2 positive electrodes exhibit capacitances of 266.2 F g-1 and 294.3 F g-1, respectively, with fascinating nanostructures and morphology. Their respective nanocomposites, AZ-1, AZ-2, and AZ-3, deliver capacitances of 356.8, 444.4, and 326.1 F g-1 with significant rate performance in aqueous solution in three-electrode assembly. The lowest ESR and Rct values of AZ-2 electrodes, which improved conductivity and charge transport kinetics and created a synergistic effect between ZnS and FeSe2 electrodes, are responsible for their exceptional capacitative performance. We built an asymmetric supercapacitor (AZ-2/AC) with an optimal voltage of 1.6 V, which demonstrated great power density (6250 W kg-1) and energy density (33 Wh kg-1) with remarkable cycling stability (88.1%) in an aqueous electrolyte after 12,000 cycles. As a result, FeSe2-based nanocomposites are strong contenders for realizing high energy and power delivery for practical applications.

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نوع عمل المنشور
Research
اسم الناشر
ScienceDIrect
مجلة/صحيفة
Journal of Science: Advanced Materials and Devices
مزيد من المنشورات
publications

The focus in recent years has been on developing innovative, green technologies for energy production and storage. Nanocomposite materials are attractive due to their exceptional performance,…

بواسطة Tayaba Tahsen, Ravia Irshad, Ayesha Hareem, Irsa Kanwal, Talib K. Ibrahim, Khalid Mehmood, Ammar M. Tighezza, Shahid Hussain
2025
publications

With the rapid development of biomedical technology, biodegradable and implantable energy storage devices for …

بواسطة Xiaofeng Zhang a , Muhammad Sufyan Javed, Hongjia Ren, Xinze Zhang, Salamat Ali, Kaiming Han , Awais Ahmad, Ammar M. Tighezza, Weihua Han, Kui-Qing Peng
2024
publications

Electrochemical energy storage devices are vital for renewable energy integration and the deployment of electric vehicles. Ongoing research seeks to create new materials with innovative…

بواسطة Dhananjaya Merum, Rosaiah Pitcheri, Nipa Roy, Naveen Kumar Kilari, Ammar Mohamed Tighezza, Soumyendu Roy, Sang Woo Joo
2024
تم النشر فى:
Wiley