A membrane-free electrochemical reactor for efficient oxygen removal via gravity-assisted product self-separation.

ABSTRACT: Although electrochemical technologies offer vast industrial prospects, broader adoption-particularly in consumer applications-remains constrained by high costs and limited component lifespans. Here, we present a gravity-assisted, membrane-free electrochemical oxygen (O₂) removal (EOR) reactor coupling oxygen reduction (ORR) and oxygen evolution (OER) reactions. Leveraging fluid mechanics insights, buoyant O₂ bubbles ascend rapidly, achieving 95% product self-separation and eliminating the need for membranes or external circulation. To withstand high hydrostatic pressures and ensure a 10-year operational lifespan, we developed an integrative gas diffusion electrode (GDE) with ~85.5% conductivity and 80.2% gas permeability relative to conventional carbon paper, yet 2.2-

SUBMITTER: Li P 

PROVIDER: S-EPMC12062329 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature