Zinc-oligoether carboxylate salts as electrolyte additives for aqueous Zn metal batteries.

ABSTRACT: Aqueous zinc-metal batteries, which pair a water-based electrolyte with an earth-abundant metal, offer a sustainable energy storage platform. However, hydrogen evolution and dendrite growth during zinc plating limit stability and cycle life. Achieving durable performance requires a comprehensive approach that promotes forming a robust solid electrolyte interphase layer. Here, we introduce zinc oligoether carboxylates as tuneable dual-function electrolyte additives. The carboxylate group promotes the formation of a zinc sulphide-based interphase through the controlled decomposition of sulphate anions, while the oligoether chain suppresses water activity at the electrode surface, as revealed by spectroscopic and electrochemical microscopy analyses. By varying the chain length, we find that t

SUBMITTER: Brown J 

PROVIDER: S-EPMC12820327 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature