Improved electrochemical performance of CuS@ graphitic carbon nitride composite for supercapacitor applications

• Published in: Journal of materials science. Materials in electronics Vol. 35; no. 20; p. 1415
• Main Authors: Ali, Mahmood, Alotaibi, B. M., Alrowaily, Albandari W., Alyousef, Haifa A., Alotiby, Mohammed F., Abdullah, Muhammad, Farid, Hafiz Muhammad Tahir, Al-Sehemi, Abdullah G., Henaish, A. M. A.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.07.2024; Springer Nature B.V
• Subjects: Carbon nitride; Characterization and Evaluation of Materials; Charge materials; Charge transfer; Chemistry and Materials Science; Copper sulfides; Electrochemical analysis; Electrode materials; Energy storage; Materials Science; Nyquist plots; Optical and Electronic Materials; Stability; Storage equipment; Storage systems; Supercapacitors; Transition metals
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-024-12952-3

Researchers have focused on fabricating energy storage equipment to tackle global energy concerns. The energy storage systems including capacitors and batteries have several limitation because of their poor electrochemical performance. The electrode material’s suitability for supercapacitor depends on its ability to improve electrochemical performance and stability. In this work, CuS@g-CN (graphitic carbon nitride) composite was developed via a hydrothermal approach. Several analytical techniques were utilized to determine performance of the prepared CuS@g-CN composite. The specific capacitance of CuS@g-CN composite was 996 F/g which displayed stability after 10,000th cycles with a retention of 93% calculated from galvanostatic charge–discharge profiles. A charge transfer resistance of 1.18 Ω of CuS@g-CN composite was found relatively lower than individual materials calculated from the Nyquist plot. The nitrogen-rich structure of g-CN permits rapid ion transportation and the presence of multiple transition metals led to improved electrochemical effectiveness. The enhanced characteristics of CuS@g-CN composite render it suitable for incorporation into future energy storage devices.