Fumasep FAA-3-50 Anion Exchange Membrane

Name: NEWARE Battery Test System (10 mA)
Brand: Canrd
Availability: InStock

$77.02

Numéro d'article:FM-EM-MM-001101

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✓ Sélectionné: 10*10cm

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This product, the Fumasep FAA-3-50 anion exchange membrane, is developed for use in electrodialysis and alkaline fuel cell applications, particularly with weakly alkaline solutions (1–2 M). As a brown transparent film with a thickness of 45–55 μm, it exhibits low specific surface resistance (0.6 Ω/cm² in chloride form, 0.10–0.15 Ω/cm² in hydroxide form) and high ion selectivity (95.5% in chloride form). The membrane offers a high ion exchange capacity of 2.02 meq/g (chloride form) and excellent conductivity, reaching 7.8 mS/cm (chloride form) and up to 45 mS/cm (hydroxide form). It remains stable across a pH range of 1–14, with a water uptake of 40 wt% and minimal swelling in chloride form. Provided dry, it requires activation prior to use, making it suitable for standard alkaline fuel cell and electrolyzer scenarios where efficient anion transport is critical.

Model	Fumasep FAA-3-20	Fumasep FAA-3-50
Physical Properties
Appearance	Brown transparent film	Brown transparent film
Thickness (um)	18~22um	45~55um
Backing Paper	Colorless rigid PET foil	Colorless rigid PET foil
Delivery Status	Dry, requires activation	Dry, requires activation
Resistance (Ω/cm2)	＜2.0 (chloride form)	Specific surface resistance 0.6 (chloride form), 0.10-0.15 (hydroxide form)
Density (mg/cm2)	7.5~8.3
Ion Exchange Capacity (meq/g)	1.652-1.85 (chloride form)	2.02 (chloride form)
Specific Conductivity (mS/cm)	＞5 (chloride form)	7.8 (chloride form) 40-45 (hydroxide form)
Ion Selectivity	＞90%	95.5% (chloride form)
Water Absorption (25°C)	7wt%	40wt%
Water Absorption Swelling Rate (25°C)	2%	2% (chloride form) 17% (hydroxide form)
Foam Point in Water (25°C)		＞2.5 bar
Acid-Base Stability	ph 1~14	ph 1~14
Applications	Used in alkaline fuel cells that do not contain KOH or have low concentrations of KOH, as well as for other electrochemical applications involving anion transfer (Cl-, Br-, Sulfates, etc.)	Used in electrodialysis and alkaline fuel cells, specifically for weakly alkaline solutions (1-2 M) in standard alkaline fuel cell and electrolyzer applications.
Characteristics	Low resistance, high selectivity, high acid-base stability

Usage and Storage Recommendations

Pretreatment Methods (By Application)

Application Scenario	Recommended Wetting/Activation Method	Notes
Fuel Cell / Redox Flow Battery	Soak in 0.5 M NaCl, 24–72 h	Promotes swelling and stabilizes dimensional stability
Electrodialysis / Acid-Base Recovery	Soak in NaCl or KCl solution, 12–48 h	Avoids bubble entrainment
CO₂ Electroreduction / Water Electrolysis	Convert to OH⁻ form: Soak in 0.5–1.0 M NaOH or KOH ≥ 24 h	Operation under inert atmosphere is preferred
Long-term Storage	Store in a dry, hermetically sealed, light-proof container	Prevents moisture and CO₂ from degrading performance
Short-term Storage	Immerse in neutral saline solution in a sealed container	Suitable for pre-wetted membranes

Confidentiality requirements regarding the use statement of the diaphragm

Dear Customer:

To avoid potential intellectual property risks, we hereby remind you to pay attention to the following important points:

1. Unauthorized disclosure is prohibited.
Without the formal written authorization from the manufacturer (such as UBE of Japan, Wscope of Korea, Celgard of the United States, etc.) or its parent company, please do not explicitly mention the use of the separators from these manufacturers in any public setting (including but not limited to patent applications, paper publications, product promotions, technical documents, social media, exhibitions, or media reports, etc.).
2. Legal risk warning
If an intellectual property infringement dispute (such as trademark, patent or trade secret issues) occurs due to unauthorized disclosure, all legal responsibilities and economic losses arising therefrom shall be borne by the disclosing party on its own.

Please make sure to pay attention to the above requirements. Avoiding any unnecessary legal disputes caused by negligence is of utmost importance. If you have any questions, please feel free to contact us at any time.