Anode Corrosion and Mitigation in Metal–Air Batteries—II (Zn–Air)

This chapter explores the intricate area of zinc–air batteries (ZABs), positioning them as promising candidates for sustainable energy storage. A central theme of the discussion revolves around the critical need to comprehend and alleviate anode corrosion—a pivotal factor that significantly impacts the durability, efficiency, and overall performance of these batteries. The examination within an alkaline medium unravels the complexities of anode corrosion, laying the foundation for a thorough investigation of potential countermeasures. The chapter systematically delves into the underlying mechanisms of anode corrosion in ZABs, containing the hydrogen evolution reaction (HER) and various strategies made to combat the self-corrosion of ZABs. Surface coatings, protective layers, zinc alloys, and composite electrodes emerge as distinct contributions to the arsenal against anode corrosion. Furthermore, the significant impact of electrolyte additives, structural modifications of electrodes, and the profound implications of anode corrosion on battery performance are explained in detail. Mitigating zinc anode corrosion in ZABs is acknowledged as a complex yet imperative endeavor. The insights conveyed throughout this chapter provide a comprehensive toolkit for addressing and limiting this compelling issue in the field of energy storage. As the pursuit of efficient and sustainable energy storage progresses, expertise in managing anode corrosion in ZABs and the ability to mitigate its effects stand out as influential factors in realizing the full potential of these energy reservoirs.