Conventional energy sources are limited and will eventually run out, leading to increased extraction efforts, higher costs and environmental harm. Switching to renewable energy sources and exploring new alternatives can create economic opportunities, drive innovation and diversify energy sources, reducing dependence on imported fossil fuels and promoting domestic energy independence. Alongside the search for new energy sources, developing efficient energy storage solutions is crucial for ensuring reliability and stability in energy supply. Supercapacitors plays a crucial role in the field of energy storage due to their high power density and capacitance. Transition metal oxides, such as Ruthenium Oxide (RuO2), Manganese Oxide (MnO2), Nickel Oxide (NiO) etc are considered superior electrode materials for supercapacitors due to their high specific capacitance and pseudocapacitive behavior. This review article will explore various synthesis methods of several metal oxides and their applications as electrodes in supercapacitors.
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