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Metal-air batteries represent a groundbreaking advancement in energy storage technology. These batteries, which rely on metals such as zinc, aluminum, and lithium reacting with oxygen from the air, offer high energy density, environmental benefits, and potential cost-effectiveness. As the demand for efficient and sustainable energy solutions grows, metal-air batteries are poised to play a crucial role in various applications, from portable electronics to electric vehicles and grid storage. Working Principle At the core of a Metal-air battery is an anode made of metal and a cathode that uses oxygen from the air. The battery operates through a redox reaction, where the metal oxidizes at the anode, releasing electrons that travel through an external circuit to provide power. Concurrently, oxygen is reduced at the cathode, combining with the metal ions to form metal oxides. This process results in a high energy output relative to the battery’s weight, making metal-air batteries exceptiona...