Category:OSWe8eada7338114bbe8f65f6ee089d439f
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| ==Overview== | | ==Overview== |
| Zinc-air batteries are a type of metal-air battery technology that offers the potential for high energy density, inherent safety, and the use of affordable, earth-abundant materials. These characteristics have attracted interest for a wide range of energy storage applications, from hearing aids and sensors to large-scale stationary energy storage. Most zinc-air batteries commercially available today are ''primary cells'' (single-use), but there is growing research and development effort aimed at making zinc-air batteries ''secondary cells'' (rechargeable). This work is driven by the technology's promise to combine high performance with sustainability and low cost. | | Zinc-air batteries are a type of {{Template:Viewer/Link|page=Category:OSW9cfcb1d3ed39476a930047ffb6de6cf0|url=|label=metal-air battery}} technology that offers the potential for high {{Template:Viewer/Link|page=Category:OSW4aa1b96e44a04b1aa0ac723d0223d80b|url=|label=energy density}}, inherent safety, and the use of affordable, earth-abundant materials. These characteristics have attracted interest for a wide range of energy storage applications, from hearing aids and sensors to large-scale stationary energy storage. Most zinc-air batteries commercially available today are {{Template:Viewer/Link|page=Category:OSW3b0b0d6e8b0e4491885e8421d3eb3b69|url=|label=primary cells}} (single-use), but there is growing research and development effort aimed at making zinc-air batteries {{Template:Viewer/Link|page=Category:OSWefc38420ecbb42e4bb3f208e7c417098|url=|label=secondary cells}} (rechargeable). This work is driven by the technology's promise to combine high performance with sustainability and low cost. |
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| ==Working Principle== | | ==Working Principle== |
| A typical zinc-air battery couples an oxygen reduction cathode with a zinc-based anode in an alkaline electrolyte. During discharge, oxygen from the air undergoes reduction at the cathode, while zinc metal at the anode is oxidized. In primary zinc-air batteries, the cathode is a porous gas diffusion electrode containing an oxygen reduction catalyst, such as manganese dioxide (MnO₂). The oxygen reduction reaction (ORR) proceeds according to: | | A typical zinc-air battery couples an oxygen reduction cathode with a zinc-based anode in an {{Template:Viewer/Link|page=Category:OSW615cff2abe954e65947198db23f4c878|url=|label=alkaline electrolyte}}. During the discharging process, oxygen from the air undergoes reduction at the cathode, while zinc metal at the anode is oxidized. In primary zinc-air batteries, the cathode is a porous gas diffusion electrode containing an oxygen reduction catalyst, such as manganese dioxide (MnO₂). The oxygen reduction reaction (ORR) proceeds according to: |
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| O₂ + H₂O + 4e⁻ ⇌ 4OH⁻ | | O₂ + H₂O + 4e⁻ ⇌ 4OH⁻ |
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| Rechargeable (secondary) zinc-air batteries use a bi-functional air cathode capable of both the oxygen reduction reaction (ORR) during discharge and the oxygen evolution reaction (OER) during charging. | | Rechargeable (secondary) zinc-air batteries use a bi-functional air electrode capable of both the oxygen reduction reaction (ORR) during discharge and the oxygen evolution reaction (OER) during charging. |
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| {{Template:Viewer/Media | | {{Template:Viewer/Media |
Latest revision as of 11:43, 15 April 2025
a type of metal-air battery with a zinc negative electrode
Overview
Zinc-air batteries are a type of metal-air battery technology that offers the potential for high energy density, inherent safety, and the use of affordable, earth-abundant materials. These characteristics have attracted interest for a wide range of energy storage applications, from hearing aids and sensors to large-scale stationary energy storage. Most zinc-air batteries commercially available today are primary cells (single-use), but there is growing research and development effort aimed at making zinc-air batteries secondary cells (rechargeable). This work is driven by the technology's promise to combine high performance with sustainability and low cost.
Working Principle
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Subcategories
This category has the following 2 subcategories, out of 2 total.