Fumasep FAA-3-20/30/50, FAA-3-PK-75/130 FuMA-Tech Anion Exchange Membr

Fumasep® FAA Series Anion Exchange Membranes
FAA-3-20 / FAA-3-30 / FAA-3-PE-30 / FAA-3-50 / FAA-3-PK-75 / FAA-3-pk-130

✨Product Introduction
💎High performance, multiple specifications, and multiple reinforcement types are available.
🌟The Fumasep® FAA series developed by German FuMA - Tech is a type of anion exchange membrane (AEM) with high selectivity, low impedance, and excellent stability. It is widely used in alkaline electrochemical systems such as alkaline fuel cells, organic flow batteries, electrodialysis, acid - base recovery, electrochemical CO₂ reduction, and water electrolysis.
✨This series provides multiple models, ranging from ultra - thin non - reinforced type to high - strength PK reinforced type. The membrane thickness covers 18 - 145 μm, meeting different needs from experimental research and development to industrial scale - up.

Detailed Description

01 Product Highlights

Excellent chemical stability: Resistant to strong acids and alkalis, pH range 0–14
Low resistance and high electrical conductivity: Conductivity up to 8 mS/cm (in Cl form)
High selectivity & high strength: Cl⁻/OH⁻ exchange efficiency >95%; Tensile strength >70 MPa (PK model)
Diversified reinforcement methods: Provide non-reinforced, PE-reinforced, and PK-reinforced options
Flexible thickness design: As thin as 18 μm, as thick as 145 μm, suitable for different stack structures

02 Standard Dimensions and Packaging

Regular dimensions: 10 × 10 cm / 20 × 30 cm
Packaging form: Dry clamping paper, PET protective film packaging
Ion form: Br⁻ (bromide ion form)
State: Delivered in dry state
⚠️ Custom cutting and bulk specifications are supported, please contact customer service

🌈 Suggestions for Use and Storage

Pretreatment Methods (Classified by Application)

Application Scenarios

Recommended Humidification/Activation Methods

Remarks

Fuel cell/Flow battery

Soak in 0.5 M NaCl for 24–72h

Promote swelling and stabilize physical dimensions

Electrodialysis/Acid - base recovery

Use NaCl or KCl solution and soak for 12–48h

Avoid bubble entrapment

CO₂ electroreduction/Electrolysis of water

Convert to OH⁻ form: Soak in 0.5–1.0 M NaOH or KOH for ≥ 24h

Better to operate in an inert atmosphere

Long - term storage

Store in a dry, sealed and light - proof condition

Prevent moisture and CO₂ from affecting performance

Short - term storage

Soak in neutral salt water in a sealed container

More suitable for already humidified membranes

 🌈 Technical Parameter Overview

Including Dry Basis Areal Density

Parameter Item

FAA-3-20

FAA-3-30

FAA-3-PE-30

Reinforcement Method

None

None

PE Reinforced

Dry Membrane Thickness (μm)

18–23

26–34

26–34

Areal Density (mg/cm²)

–

–

2.0–2.8

Ion Exchange Capacity

1.65–1.85

1.67–2.04

1.4–1.6

Area Resistance (Cl⁻)

<2.0 Ω·cm²

<2.0

<1.3

Electrical Conductivity (Cl⁻)

>5

>5

>2.0

Selectivity (%)

>90

>90

>94

Water Uptake (%)

~7

<19

<20

Dimensional Swelling Rate (%)

<2

<2

<1

Proton Transport Rate

–

–

–

Young's Modulus (MPa)

–

–

–

Tensile Strength (MPa)

–

–

–

Elongation at Break (%)

–

–

–

Bubble Point Pressure (bar)

–

–

–

pH Stability Range

1–12

1–12

1–12

Recommended Applications

Fuel cell, Electrodialysis

Flow battery

Capacitive deionization, Electrodialysis

🌈Technical Parameters Overview

(Dry Areal Density Included)

Parameter Item

FAA-3-50

FAA-3-PK-75

FAA-3-PK-130

Reinforcement Method

None

PK Reinforced

PK Reinforced

Dry Film Thickness (μm)

45–55

70–80

115–145

Areal Density (mg/cm²)

6.0–8.5

7.0–9.0

10.0–13.0

Ion Exchange Capacity

1.6–2.1

1.2–1.4

0.7–0.9 meq/g

Areal Resistance (Cl⁻)

0.6–1.5

1.2–2.0

<9.7

Electrical Conductivity (Cl⁻)

3–8

4.5–6.5

>1.5 mS/cm

Selectivity (%)

92–96

94–97

>95

Water Absorption (%)

10–25

10–20

<14

Dimensional Swelling Rate (%)

0–2

0–2

0

Proton Transport Rate

1000–3000

–

<1000 nmol/min·cm²

Young's Modulus (MPa)

1000–1800

–

>1000

Tensile Strength (MPa)

25–40

–

>70

Elongation at Break (%)

15–60

–

>35

Bubble Point Pressure (bar)

>2.5

–

>3

pH Stability Range

0–14

0–14

0–14

Recommended Applications

Water Electrolysis, Desalination

Acid-Base Recovery

CO₂ Reduction, Strong Alkali Electrolysis

Detailed Description

03 Common Questions FAQ

💖 Q1: Is the delivered membrane wet or dry?
A: Delivered in dry state by default, in Br⁻ form, packaged with interleaving paper or PET film.
💜 Q2: Do I need to activate it before use?
A: Yes. It is recommended to carry out humidification or OH⁻ form conversion treatment according to the application (see usage suggestions).
💙 Q3: Can the membrane be cut? Does cutting affect performance?
A: It can be cut according to size requirements. It is recommended to use sharp tools and smooth the edges to prevent electric field concentration.
💚 Q4: Can the membrane be used in systems containing organic solvents?
A: Some models (such as FAA - 3 - 30) have been verified in flow batteries. It is recommended to conduct compatibility tests first.
🧡 Q5: How to store unused membrane materials after use?
A: It is recommended to rinse them clean with deionized water, then store them in sealed bags in a refrigerator, or dry them and store them in a sealed and dark place.

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