Process for developing flexible electrodes based on ferrite and 2D graphene oxide nanosheets for symmetrical supercapacitors

Abstract

Faculty of Sciences of Tunis (2092 El Manar Tunis, Tunisia) and Energy Research and Technology Center "CRTEn" (Borj-Cédria Technopole, Bp95, 2050 Hammame-Lif, Tunisia) [74] Helmi MARDASSI - Acting Director General of Research Valorization - Ministry of Higher Education and Scientific Research - Avenue Ouled Haffouz 1030 - Tunis [57] The present invention relates to the method for manufacturing an electrode intended for an electrochemical energy storage device. The electrode comprises a flexible metallic support onto which a composite material is deposited. This composite material, combining a two-dimensional graphene oxide structure and a three-dimensional ferrite structure, represents a significant advancement in the development of high-performance supercapacitors. The key innovation lies in the electrode's ability to function reversibly as an anode and cathode in an alkaline environment, with a specific capacitance of 2157 F / g and a retention capacitance of 96% after 6000 charge / discharge cycles.