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NEPEM Proton Exchange Membrane 125μm Vanadium Flow Battery

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NEPEM N-115 proton exchange membrane for VRFB. 125μm thick, 246 g/m², ≥0.1 S/cm. Improved strength. Tensile ≥30MPa, elongation ≥120%. Order now.

SKU: AFMSFLTN294
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Description

ATOMFAIR® VRFB ION EXCHANGE MEMBRANE TAPE CASTING SHEET

RESEARCH GRADE MATERIAL

Product Overview
Engineered through an advanced tape-casting process, this commercial-grade proton exchange membrane delivers exceptional cell-to-cell consistency, improved tensile strength, superior moisture retention, and high vanadium cross-mixing resistance. It functions as an ideal baseline testing control for next-generation Vanadium Redox Flow Battery (VRFB) stacks, eliminating variables across continuous verification platforms. Laboratories can leverage our secure tape casting ion exchange membrane price mapping to scale electrochemical storage architectures with uncompromised operational life.

Technical Specifications

PARAMETER DETAILS
1. Core Device & Electrochemical Design
Thickness (μm) 125
Weight (g/m²) 246
2. Mechanical & Physical Properties (23°C, 50% RH)
Tensile Strength (MPa) ≥ 30
Elastic Modulus (MPa) ≥ 400
Elongation at Break (%) ≥ 120
Specific Gravity 1.97
3. Electrochemical Performance Metrics
Conductivity (S/cm, 23°C, 100% RH) ≥ 0.100
Normal Conductivity (S/cm, 25°C in 3M H2SO4) ≥ 0.04
Acid Capacity (meq/g) 1.00 ± 0.05
4. Hydrolytic & Dimensional Properties
Water Content (%) 5.0 ± 3.0
Water Uptake (%) 50.0 ± 5.0
Thickness Swelling (23°C / 100°C Water) ≤ 5% at 23°C | ≤ 15% at 100°C
Linear Expansion (23°C / 100°C Water) ≤ 5% at 23°C | ≤ 18% at 100°C
Manufacturing Rules Processed under strict ISO standard manufacturing compliance conditions
Alternative Options Explore our related catalog or custom dimensions. For urgent technical custom requests or bulk inquiries, please contact our support team.


Key Features & Advantages
  • Homogeneous Material Purity: Features an uncompromised structural configuration with highly uniform elemental distribution across the matrix.
  • Enhanced Operational Efficiency: Specifically engineered to demonstrate superior electrochemical performance, significantly boosting transfer kinetics at targeted bands.
  • Optimized Sintering/Microstructure: Advanced synthesis allows for lower required operating temperatures and ideal grain boundary integration during cell fabrication.

APPLICATION SCOPE: Vanadium redox flow battery (VRFB) architectures, energy storage stack R&D, and high-acid electrochemical cells.
PACKAGING: Precision-rolled protective vacuum membrane cylinders or custom die-cut sheets.
IMPORTANT NOTICE: This product is highly sensitive to ambient exposure. Keep containers tightly sealed or handle exclusively within an anhydrous inert gas environment to prevent phase contamination or degradation before thermal validation.
TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official institutional quotations.
EMAIL: INQUIRY@ATOMFAIR.COM
MANUFACTURER: ATOMFAIR LLC

The NEPEM N-115 is a 125 μm thick proton exchange membrane with a basis weight of 246 g/m², designed for vanadium flow batteries with enhanced vanadium resistance. It exhibits defined constraints for mechanical properties, conductivity, acid capacity, and hydrolytic swelling under specified conditions.

  • Mechanical Strength Constraints: Tensile strength must be at least 30 MPa, elastic modulus at least 400 MPa, and elongation at break at least 120% at 23°C and 50% relative humidity.
  • Conductivity Requirements: Conductivity must be at least 0.100 S/cm at 23°C and 100% relative humidity, and normal conductivity at least 0.04 S/cm in 3M H₂SO₄ at 25°C.
  • Acid Capacity Constraint: Acid capacity must be within 1.00 ± 0.05 meq/g.
  • Water Content and Uptake Constraints: Water content must be 5.0 ± 3.0% and water uptake 50.0 ± 5.0%.
  • Swelling and Expansion Limits: Thickness swelling must not exceed 5% at 23°C and 15% at 100°C, and linear expansion must not exceed 5% at 23°C and 18% at 100°C.

What is the trade-off between membrane thickness and mechanical durability for the NEPEM N-115 in vanadium flow batteries?

The 125 μm thick NEPEM N-115 membrane provides a tensile strength ≥30 MPa and elastic modulus ≥400 MPa, ensuring mechanical durability under stack compression while balancing proton conductivity ≥0.100 S/cm at 23°C, 100% RH. This trade-off is achieved through a special tape casting process that enhances strength and vanadium resistance without increasing thickness.

What electrolyte concentration is the NEPEM N-115 membrane designed for in vanadium flow battery applications?

The NEPEM N-115 membrane is characterized for use in 3M H₂SO₄ electrolyte, where it demonstrates a normal conductivity ≥0.04 S/cm at 25°C. Its improved vanadium resistance from special tape casting materials ensures compatibility with the acidic vanadium redox species common in flow battery operation.

What is the dimensional stability of the NEPEM N-115 membrane when exposed to water at elevated temperatures?

At 100°C water immersion, the NEPEM N-115 membrane undergoes thickness swelling ≤15% and linear expansion ≤18%, compared to ≤5% for both at 23°C. This substantial dimensional change at elevated temperatures necessitates careful thermal management during assembly and operation to avoid mechanical stress or seal failure.

The NEPEM N-115 membrane delivers enhanced vanadium resistance and mechanical strength for vanadium flow battery deployment, but its dimensional stability degrades significantly at 100°C and the low water content specification requires careful humidity control during storage and handling.

Positive

  • Improved Vanadium Resistance: Special materials in the tape casting process enhance resistance to vanadium ion crossover, directly improving battery cycle life and coulombic efficiency in vanadium redox flow systems.
  • High Mechanical Strength: With tensile strength ≥30 MPa, elastic modulus ≥400 MPa, and elongation at break ≥120%, this membrane provides robust mechanical integrity for stack assembly and pressure management during operation.

Trade-offs

  • Limited High-Temperature Dimensional Stability: Thickness swelling reaches ≤15% and linear expansion ≤18% in 100°C water, which can induce mechanical stress and dimensional mismatch in the cell stack under elevated operating temperatures.
  • Low Water Content Sensitivity: The specified water content of 5.0±3.0% is low; improper storage in dry environments may further reduce hydration, compromising ionic conductivity and leading to brittle behavior.

Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.

To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.

Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).

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