Enabling Stable Zn Anodes by Molecularly Engineering the Inner Helmholtz Plane with Amphiphilic Dibenzenesulfonimide Additive.

ABSTRACT: The notorious dendrite growth and hydrogen evolution reaction (HER) are considered as main barriers that hinder the stability of the Zn-metal anode. Herein, molecular engineering is conducted to optimize the inner Helmholtz plane with a trace of amphiphilic dibenzenesulfonimide (BBI) in an aqueous electrolyte. Both experimental and computational results reveal that the BBI^- binds strongly with Zn²⁺ to form {Zn(BBI)(H₂ O)₄ }⁺ in the electrical double layer and reduces the water supply to the Zn anode. During the electroplating process, {Zn(BBI)(H₂ O)₄ }⁺ is "compressed" to the Zn anode/electrolyte interface by Zn²⁺ flow, and accumulated and adsorbed on the surface of the Zn anode to form a dyn

SUBMITTER: Yang J 

PROVIDER: S-EPMC10401170 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature