From spent alkaline batteries to active Zn||Zn_xMn₂O₄aqueous batteries: a mild process of cathode recycling and crystal engineering

Abstract

A mild, efficient, and low-cost method was designed for recycling cathode materials from spent alkaline batteries into advanced aqueous zinc batteries.

Enhanced Zn ion storage performance of a polypyrrole-coated Mn3O4 composite electrode

“…1 Therefore, research on efficient energy storage technology is becoming a hot topic in the field of science and technology. 2,3 Lithium-ion batteries (LIBs) are widely used in various electronic products and power tools owing to their high storage energy density and long cycle life. 4 However, their future development is restricted by the scarcity of lithium resources and the safety of the electrolyte.…”

Battery waste-derived functional materials for the capture and removal of harmful gases

“…This could provide signicant commercial value to battery waste before recycling, thereby reducing overall recycling costs. In the literature, numerous reports have demonstrated promising applications of battery waste-derived functional materials in heterogeneous catalysis, 11,12 energy storage devices, 13,14 and heavy metal sequestration. 15,16 Liu briey reviewed these applications in 2018.…”

Hydrogen Sulfide Gas Capture by Discarded Zn-MnO2 Alkaline Batteries in Ambient Conditions

“…4 Sambeth et al described a biohydrometallurgical process for extracting metals and utilizing them to synthesize catalysts for VOC oxidation. 5 Numerous research groups have recycled spent alkaline batteries to synthesize various functional materials, including Zn x Mn 2 O 4 /carbon cathode material, 6 spinel Zn x Mn 3−x O 4 , 7 MnO 2 as oxygen electrocatalysts for Zn−air batteries, 8 and pure ZnO nanoparticles. 9 All of these studies underscore the importance of recycling spent batteries for the recovery of valuable metals or repurposing them into functional materials.…”