## 1 Introduction  
Owing to its versatile nature and multiple properties, including thermodynamic stability, high conductivity, speedy charge carrier mobility, larger surface area, and various functional groups at the surface, graphene oxide is one of the most favored forms of carbon that has been used in research for the past two decades. Using GO sheets as a substrate for anchoring various metal oxides is one of the most recent trends to provide maximum functionality regarding electrochemical, storage devising, and catalytic properties. Taking into account this scenario, GO has been used to anchor metal oxide nanoparticles [1, 2]. The idea of using iron oxide (Fe\({}_{2}\)O\({}_{3}\)) nanoparticles for the preparation of composites is related to the transfer properties of Fe\({}_{2}\)O\({}_{3}\) such as a good charge transfer mechanism regarding the average band gap, superior electrochemical energy storage, a non-toxic nature, and better chemical stability. GO has been used as a substrate to stabilize Fe\({}_{2}\)O\({}_{3}\) nanoparticles that not only prevent the agglomeration but also refine the stacking factor of GO sheets [3]. [PERSON] et al. efficiently synthesized Fe\({}_{2}\)O\({}_{3}\)/Sb using \(\alpha\)-Fe\({}_{2}\)O\({}_{3}\) with Sb as an anode for Na-ion batteries [4]. Graphitic carbon nitride (g-C\({}_{3}\)N\({}_{4}\)) has attracted more attention from researchers due to its unique properties as a semiconductor with a 2.7 eV band gap in various photocatalytic applications. When g-C\({}_{3}\)N\({}_{4}\) is combined with other conductive materials, its properties are enhanced toward various catalytic reactions [5]. In recent years, g-C\({}_{3}\)N\({}_{4}\) has been utilized in supercapacitors due to its structure, good resistance properties, and presence of nitrogen. Three-dimensional graphene-based g-C\({}_{3}\)N\({}_{4}\) electrodes have been developed in symmetric supercapacitors with a capacitance of 264 F g\({}^{-1}\) at 0.4 A g\({}^{-1}\)[6; 7]. Asymmetric capacitors have remarkable electrochemical properties with high capacitance and current voltage as compared to symmetric supercapacitors. Ni (OH)\({}_{2}\)-based g-C\({}_{3}\)N\({}_{4}\) electrodes have been generated for asymmetric supercapacitors, having a capacitance of 505.6 F g\({}^{-1}\) at 0.5 A g\({}^{-1}\), with a low cyclic stability. NiCo\({}_{2}\)S\({}_{4}\) nanosheet-based g-C\({}_{3}\)N\({}_{4}\) has been developed to increase electrochemical properties, where capacitance is recorded as 506 C g\({}^{-1}\) at 1 A g\({}^{-1}\)[8; 9; 10]. A g-C\({}_{3}\)N\({}_{4}\)/CoS nanocomposite has been proposed for supercapacitors due to its enhanced capacitance of 668 F g\({}^{-1}\) at 2 A g\({}^{-1}\)[11]. The PANI/g-C\({}_{3}\)N\({}_{4}\) nanocomposite exhibited an improved capacitance of 584.3 F g\({}^{-1}\) at 1 A g\({}^{-1}\), where electrodes gain high stability to make supercapacitors work more efficiently [12]. The development of the g-C\({}_{3}\)N\({}_{4}\)-based Co\({}_{3}\)O\({}_{4}\) electrode rendered materials with a remarkable enhanced capacitance of 780 F g\({}^{-1}\) at 1.25 A g\({}^{-1}\) with a high cyclic stability [13]. The choice of cerium and ytterbium oxides to be a part of synthesized nanocomposites relates to their performance in redox processes to induce better capacitance properties and create improved band gap properties in order to carry out photocatalytic reactions. Studies indicate that Ce-C\({}_{3}\)N\({}_{4}\) has been considered a versatile material due to its photocatalytic properties and high stability, with enhanced catalytic behavior in hydrogen evolution reactions [14]. F-doped Ce-C\({}_{3}\)N\({}_{4}\) has been suggested for hydrogen energy production with enhanced photocatalytic properties. With a larger availability of active sites, Ce-C\({}_{3}\)N\({}_{4}\) derivatives show enhanced catalytic activities in hydrogen reduction reactions [15].