Dissecting ionic favorable hydrogen bond chemistry in hybrid separators for aqueous zinc-ion batteries.

ABSTRACT: Separators, regulating the ion transport channels between electrodes, are crucial for maintaining the properties of electrochemical batteries. However, sluggish ion transport and desolvation kinetics in aqueous zinc-ion batteries (AZIBs) cause uneven ion flux at the separator-electrode interface, accelerating Zn dendrite growth. Herein, we systematically dissect ionic favorable hydrogen bond chemistry in a hybrid separator engineered through rational boron nitride (BN) doping into polyacrylonitrile (PAN) separators. Notably, in situ Fourier transform infrared spectroscopy (FTIR) analyses reveal that the hydrogen bond network in a BN-PAN separator improved the desolvation of Zn²⁺ by immobilizing water molecules through hydrogen bond interactions, thus effectively increasin

SUBMITTER: Wang Y 

PROVIDER: S-EPMC11891929 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature