Anode of Zn-Air Battery

Zn-air batteries are renewable energy devices that generate electrical energy through a redox reaction between the anode metal and the cathode oxygen. In recent years, rechargeable Zn-air batteries have been extensively studied for their great potential in the consumer electronics market and the field of mobile power. They offer greater advantages in many fields than other batteries. For example, metal ion batteries, particularly lithium-ion batteries, are widely used in electronic devices due to the high open-circuit voltage, large power density, long operating life, and relatively advantageous energy density (Lee et al. in Adv Energy Mater 1:34, 2011; Wang et al. in Adv Funct Mater 28:1803329, 2018).