Direct Integration of Spent LiMnO with High Voltage Aqueous Zinc-Manganese Redox Flow Batteries as a Practical Upcycling Process.

With the explosive growth of lithium-ion batteries (LIBs), research on the recycling of spent batteries is widely conducted. However, conventional processes involve complex procedures, high costs, and environmental issues. This study introduces the electrochemical upcycling of spent LiMnO (LMO) cathode material, incorporating pre-filtration (PF) and pre-reduction (PR) processes to enable its direct application in redox flow batteries (RFBs).

Recent Progress in High-voltage Aqueous Zinc-based Hybrid Redox Flow Batteries.

The energy density of redox flow batteries (RFBs) is generally affected by the standard electrode potential and the solubility of the redox active species. These crucial factors are closely related to the solvent in which the active materials are dissolved. Aqueous RFBs have been widely studied due to their excellent reaction kinetics and high solubility of the redox couple in aqueous media.