High-performance anodes for aqueous Zn–iodine batteries from spent Zn–air batteries

Abstract

Recycling spent batteries is of strategic importance from an environmental and economic standpoint. Herein, the discharge product of Zn–air batteries is re-used as a superior anode to facilitate the Zn stripping/plating process, inhibit dendrite growth, and alleviate the iodide crossover issue, thus endowing Zn–iodine batteries with enhanced electrochemical performance.