ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Facile synthesis of MgO-carbon nanocomposites for advanced capacitive electrode materials

Aniruddha Mondal, Mohd Afzal, and Sudip Mondal

Department of Chemical Engineering and Biotechnology, Tatung University, Chungshan North Rd, Taipei City, Taiwan

E-mail: aniruddhacsmcri@gmail.com

Received: 6 October 2023  Accepted: 25 March 2024

Abstract:

The current study aims to develop a unique approach for constructing an asymmetric supercapacitor utilizing a nanocomposite of MgO-carbon as electrode material. The geometrical surface area of the MgO-carbon has shown to be highly porous with different porosities, and the value is 210 m²g⁻¹. This supercapacitor operates with an aqueous electrolyte consisting of 1 M KOH. The findings indicate that the test cell exhibited exceptional electrochemical output within the voltage range of 0 to 1 V. The capacitance of the MgO-carbon cell is measured to be 225 F g⁻¹ at a current density of 2 A g⁻¹. According to research on cycling, the aforementioned cell has demonstrated the ability to maintain 97% of its original capacitance following 20,000 cycles. The findings of this study suggest that the MgO-carbon holds promise as an electrode material for the development of environmentally friendly and cost-effective energy storage devices. This composite exhibit excellent energy and power densities, along with a prolonged cycle life.

Keywords: Supercapacitor; Electrochemistry; EDLC; Energy storage; MgO; Carbon

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-024-03445-y

Chemical Papers 78 (8) 4961–4970 (2024)