Metallic Organic Framework (MOF) applications for ZBRBs

MOF UiO-66/-67 was used in a composite membrane, and its 6-8 Å windows effectively block ${\text{I}}_3⁻$ (which has a large hydrated radius), successfully preventing its crossover.

For ZnBr₂ flowless batteries, amidated and sulfonated UiO-66 supported on Nafion (NF/U-AS) was developed. Bromine crossover was suppressed via chemical binding of Br₂/${\text{Br}}_n^{-}$ to amine and physical confinement in MOF cages, while sulfonate groups facilitated balanced ion transport by forming abundant water channels.

Source : 10.1007/s40820-026-02068-0

Zinc coordination polymer glass MOF

Amorphous glass ($a_g$) MOFs have short-range ordered and long-range disordered structure, and exhibit good processing ability and gas-accessible micropores, making them a promising material for gas separation.

The usual way they are prepared is:

1. Make a Zn-based coordination polymer precursor whose framework can survive heating long enough to melt or soften.
2. Ensure its melting temperature is below its decomposition temperature.
3. Heat above $T_m$ to form a viscous liquid or soft molten phase.
4. Quench, cast, or hot-press that melt to trap the disordered structure as a glass.

This is the classic melt-quench route used across Coordination Polymer (CP)/MOF glasses. Researchers then verify glass formation with DSC/TGA for $T_g,T_m,T_d$, PXRD for loss of Bragg peaks, and techniques like XAFS/PDF for retained local coordination.