Nanoporous Polyethylene (PE) Separator for Redox Flow Battery, 5 pcs/pack, CRFBNPPES
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In a Redox Flow Battery (RFB), a PE (Polyethylene) nanopore membrane (often called a nanoporous separator) represents a shift away from expensive chemical "ion-exchange" membranes toward a mechanical "sieving" approach. By shrinking the pores from the micrometer scale down to the nanometer scale (typically <20 nm), these membranes can block large redox-active molecules while letting tiny charge-carrying ions pass through at high speeds.
Nanoporous PE uses a physical process: (1) Size Exclusion: The "nanopores" are engineered to be larger than a proton (H+) or a chloride ion (Cl-) but smaller than the bulky "active species" (like Vanadium ions or Organic complexes). (2) Ion Flux: Because the pores are essentially open channels filled with liquid electrolyte, the resistance is lower than in solid polymers, allowing for higher power density.
| Part Number |
CRFBNPPES (C-RFB-NPPES) |
| Appearance |
Off-white or grey |
| Dimension |
T 0.5 * L 100mm * W 100 mm (Other membrane sizes can be supplied upon request) |
| Pore Size |
~20 nm |
| Porosity |
~55% |
| Package Grade |
5 pcs/pack |
| Note |
The nanoporous PE separator is especially suitable for Zinc-Bromide flow battery system. |
References
(1）H. Y. Jung, et al., Ionic transportation and chemical stability of high-endurance porous polyethylene separator for vanadium redox flow batteries, Ionic transportation and chemical stability of high-endurance porous polyethylene separator for vanadium redox flow batteries 2018, 327, 110-116.