Flow Battery with Remarkably Stable Performance at High Current Density: Development of A Nonfluorinated Separator with Concurrent Rejection and Conductivity.

ABSTRACT: Redox flow batteries show promise for large-scale grid stabilisation. Of these, organic redox flow batteries (ORFBs) harbour the potential for sustainable and economic operation due to the materials deployed. Their long-term operation requires exquisite transport control of species across the cell, with movement of cations key for high current density, and anionic rejection needed for cycling stability. Nafion, although promising as a commercial separator, faces cost and sustainability limitations due to its fluorinated nature and per- and polyfluroralkyl substances (PFAS) generation. Here, we report the tailored combination of a hydrophilic mixed-matrix membrane, SPEEK-SX, with sulphonated polydichloroxylene (Sp-DCX) as the additive and sulphonated poly(ether ether ketone) (SPEEK) as the

SUBMITTER: Liang W 

PROVIDER: S-EPMC12171330 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature