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Abstract Graphene‐based metal oxide mixtures have emerged as a promising material suitable for high‐performance supercapacitors because of their unique combination of high electrical conductivity, large surface area, and excellent electrochemical stability. Integrating metal oxides, such as Manganise dioxide (MnO 2) , Cobalt oxide (Co 3 O 4 ) Nickel oxide (NiO), Ruthenium oxide (RuO 2 ) etc., with graphene enhances supercapacitor electrodes, specific capacitance, energy density, and cycling stability. This review examines the latest progress in the synthesis, characterization, and performance optimization of graphene‐based metal oxide composites. Various strategies for enhancing electrochemical properties, like as controlling the morphology, adjusting the metal oxide loading, and optimizing the hybridization methods, are discussed. Furthermore, graphene's role in enhancing electron conduction, increasing the stability of metal oxides, and expanding the surface area for charge storage is highlighted. The challenges in scaling up these materials are also addressed and provide insights into future directions to enhance the performance of graphene‐based metal oxide supercapacitors, with an emphasis on energy density, power density, and long‐term cycling stability. This review offers a comprehensive overview of the state‐of‐the‐art research on graphene‐metal oxide composites, with the goal of steering the advancement of next‐generation energy storage devices.
Yallur et al. (Sat,) studied this question.
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