Non-Fluorinated Ion Exchange Membrane
PBI Flow Battery Membrane
Compared to the currently widely used fluorinated proton exchange membranes, PBI (polybenzimidazole) flow battery membranes offer advantages such as the easy synthesis of resin raw materials and lower costs.
和储新材The ZH Energy PBI flow battery membrane product successfully resolves the previous conflict between oxidative resistance and proton conductivity in non-fluorinated proton exchange membranes, achieving the goal of simultaneously enhancing chemical stability and proton conductivity. Its battery performance have reached the same level as those of fluorinated proton exchange membranes. This product can be applied to various flow battery technologies, including vanadium, iron-chromium, and sulfur-iron systems.
☑ Excellent ion selectivity, high proton conductivity, and vanadium resistance.
☑ Thin, strong, low swelling ratio, good dimensional stability, and resistance to electrode puncture.
☑ High-temperature resistance, oxidative resistance, and good chemical stability.
| Specifications | ||
|---|---|---|
| Performance | Technical Specification | Testing Method |
| Thickness(μm) | 15-40 | NB/T42080-2016 |
| Proton Conductivity (mS/cm) | ≥40 | NB/T42080-2016 |
| Vanadium IonPermeability (10⁻⁷cm² min⁻¹) | ≤1.0 | NB/T42080-2016 |
| Coulombic Efficiencyof Vanadium Batteries | ≥99% | General Standard |
| Energy Efficiency of Vanadium Batteries | ≥83%@120mA/cm² ≥80%@180mA/cm² |
General Standard |
PBI fuel cell membranes
The ZH Energy PBI fuel cell membrane is a non-reinforced polybenzimidazole membrane prepared by casting. This product boasts excellent high-temperature resistance, maintaining long-term stability at 300℃, making it suitable for high-temperature proton exchange membrane fuel cell applications.
☑ Excellent proton conductivity.
☑ High strength, low swelling ratio, and good dimensional stability.
☑ High-temperature resistance, oxidative resistance, and good chemical stability.
| Specifications | ||
|---|---|---|
| Performance | Technical Specification | Testing Method |
| Thickness(μm) | 10-100/±3% | GB/T20042.3-2022 |
| Width (mm) | 600 | General Standard |
| Tensile Strength (MPa) | 130-200 | GB/T20042.3-2022 |
| Elongation at Break (%) | 30-50 | GB/T20042.3-2022 |
| Dielectric Strength (MV/m) | 350-400 | General Standard |
| Acid Uptake (wt.%) | 400-450 | General Standard |
| Dimensional Swelling Ratio（%） | 30±5 | General Standard |
| Thickness Swelling Ratio（%） | 70±5 | General Standard |
| Tensile Strength（420wt.% Acid Uptake）(MPa) | 12-15 | General Standard |
| Proton Conductivity(420wt.% Acid Uptake、160℃、RH=0%)（mS/cm） | 100-120 | GB/T20042.3-2022 |
| Hydrogen permeation current density (mA/cm²) | 1-2 | General Standard |