A weak acid-responsive porous polyelectrolyte membrane enables the high efficiency of a zinc anode interface.

ABSTRACT: Polymer coatings are promising candidates as artificial interfacial materials due to their significant barrier properties and zincophilicity, whereas modified zinc anodes for high depth of discharge (DOD) remain a major challenge. Herein, we present a novel approach that combines electrostatic complexation with phase separation in a weak-acid solution, which induces the formation of acid-responsive porous polyelectrolyte membranes, leading to an extended lifespan of the zinc anode of up to 900 h at a high current density of 40 mA cm^-2. Additionally, the Zn@PEI-PSSNa anode demonstrates excellent zinc utilization, operating for up to 200 h at an ultra-high DOD of 97.3%. The Zn@PEI-PSSNa‖Cu cell further exhibits long-term cycling stability with a super-high coulombic efficiency (CE

SUBMITTER: Li W 

PROVIDER: S-EPMC12231561 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature