The structure and working principle of zinc-air battery Q: What is the internal structure of zinc-air battery and how does it work? Battery structure: Zinc powder in paste form at the cathode end and catalytic carbon at the anode. The holes in the battery shell allow oxygen from the air to enter the cavity and attach to the carbon at the anode. At the same time, the zinc at the cathode is oxidized, which is similar to the chemical reaction of small silver-oxygen or mercury-oxygen batteries. Anode - catalytic carbon absorbs oxygen from the air. Cathode - a mixture of zinc powder and electrolyte in paste form. Electrolyte - a high concentration of KOH aqueous solution. Separator - used to isolate the movement of solid powder particles between the two stages. Insulation and sealing gasket - nylon material. Battery outer surface - nickel metal shell, a conductor with good corrosion resistance. Working principle Cathode: Zn + 2OH = ZnO + H2O + 2e Anode
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