Boosting Zinc Electrode Reversibility in Aqueous Electrolytes by Using Low‐Cost Antisolvents

Antisolvent addition has been widely studied in crystallization the pharmaceutical industries by breaking solvation balance of original solution. Here we report a similar antisolvent strategy to boost Zn reversibility via regulation electrolyte on molecular level. By adding for example methanol into ZnSO4 electrolyte, free water and coordinated Zn2+ sheath gradually interact with antisolvent, which minimizes activity weakens solvation. Concomitantly, dendrite-free deposition occurs change orientation, as evidenced situ optical microscopy. is significantly boosted 50 % volume (Anti-M-50 %) even under harsh environments −20 °C 60 °C. Additionally, suppressed side reactions plating/stripping Anti-M-50 enhance performance Zn/polyaniline coin pouch cells. We demonstrate this low-cost can be readily generalized other solvents, indicating its practical universality. Results will immediate interest benefit range researchers electrochemistry energy storage.