The iron-air battery is an electrochemical device that uses iron as one electrode and atmospheric oxygen from the air as the other to store and release electrical energy through a reversible rusting process.
High-cost lithium-ion batteries and their limited cycling life in large-scale energy storage systems are replaced by a more affordable and sustainable solution.
Iron electrodes undergo reversible oxidation (rusting) and reduction with atmospheric oxygen, allowing for the storage of energy. The round trip cycle can last up to 100 hours, making it suitable for long-duration grid storage applications.
The manufacturing process involves coating iron sheets with a catalyst to enhance the electrochemical reaction, followed by assembly into battery cells. The air electrode is formed from porous materials that allow for efficient gas diffusion.
Iron sheets are coated with a catalytic material, then assembled with an air cathode and separator in a sealed container. Electrolyte is not required as the air acts as the electrolyte.
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