Additives for Aqueous Zinc ‐Ion Batteries: Recent Progress, Mechanism Analysis, and Future Perspectives

The roles of anode additives may be summed up as follows: modify the electric double layer, create the solid-electrolyte interface, regulate the zinc facet, and modulate the electric field. Rebuilding the solvation sheath and strengthening the hydrogen bond network are the two main ways that the activities of altering the electrolyte environment can be summed up. AbstractAqueous zinc-ion batteries (ZIBs) stand out as a promising next-generation electrochemical energy storage technology, offering notable advantages such as high specific capacity, enhanced safety, and cost-effectiveness. However, the application of aqueous electrolytes introduces challenges: Zn dendrite formation and parasitic reactions at the anode, as well as dissolution, electrostatic interaction, and by-product formation at the cathode. In addressing these electrode-centric problems, additive engineering has emerged as an effective strategy. This review delves into the latest advancements in electrolyte additives for ZIBs, emphasizing their role in resolving the existing issues. Key focus areas include improving morphology and reducing side reactions during battery cycling using synergistic effects of modulating anode interface regulation, zinc facet control, and restructuring of hydrogen bonds and solvation sheaths. Special attention is given to the efficacy of amino acids and zwitterions due to their multifunction to improve the cycling performance of batteries concerning cycle stability and lifespan. Add...
Source: Small - Category: Nanotechnology Authors: Tags: Review Source Type: research