The long-standing challenges to the practical implementation of rechargeable zinc-air batteries (ZABs) are the electrochemical irreversibility of the Zn anode and degradation of the air cathodes in alkaline electrolyte, which eventually result in poor cycle life and low cell voltage.
source https://www.lifetechnology.com/blogs/life-technology-technology-news/new-membrane-improves-reversibility-of-zinc-air-batteries
