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NEPEM N-1135 Proton Exchange Membrane 80μm Vanadium Flow

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NEPEM N-1135 proton exchange membrane, 80μm thick, 172 g/m², conductivity ≥0.100 S/cm, water uptake 50.0%, acid capacity 1.00 meq/g. Ideal for VRFB. Order now.

SKU: AFMSZRCU499
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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) 80
Weight (g/m²) 172
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 membrane must be stored under controlled humidity (23°C, 50% RH) to maintain its specified water content and prevent dimensional instability. Operational exposure to high-temperature water (>100°C) induces irreversible swelling and must be avoided.

  • Humidity Control: Store the membrane at 23°C and 50% relative humidity to preserve water content of 5.0±3.0% and dimensional stability.
  • Thermal Exposure Limits: Limit continuous exposure to aqueous environments above 100°C to prevent linear expansion exceeding 18% and thickness swelling beyond 15%.
  • Electrolyte Compatibility: The membrane is formulated for vanadium redox flow battery electrolytes and may degrade in contact with non-vanadium chemistries.
  • Conductivity Measurement Conditions: Measure ionic conductivity at 23°C under 100% relative humidity to achieve the specified value of ≥0.100 S/cm.
  • Mechanical Integrity: Avoid folding, creasing, or puncturing the membrane to maintain uniform thickness of 80 μm and prevent localized failure.

How does the conductivity of the NEPEM N-1135 in vanadium flow battery electrolyte compare to its fully hydrated state, and what structural properties enable its vanadium resistance?

In 3M H₂SO₄ at 25°C, the normal conductivity is ≥0.04 S/cm, lower than the ≥0.100 S/cm at 100% RH, reflecting the trade-off between swelling and conductivity. Its tensile strength ≥30 MPa and elastic modulus ≥400 MPa, achieved through the tape casting process with special materials, provide enhanced vanadium resistance while maintaining adequate proton transport.

How does the membrane's dimensional stability affect stack assembly and long-term performance under thermal cycling?

At 23°C, thickness swelling is ≤5% and linear expansion ≤5%, while at 100°C, swelling increases to ≤15% and expansion to ≤18%. These controlled expansion values ensure compatibility with standard flow battery stack frames and prevent membrane distortion during operation, reducing the risk of vanadium crossover.

What storage and preconditioning steps are required before using the NEPEM N-1135 in a vanadium flow battery?

The membrane must be stored at 50±5% relative humidity to maintain its water content of 5.0±3.0%. Prior to use, it should be fully hydrated to achieve the specified water uptake of 50±5% and acid capacity of 1.00±0.05 meq/g. The 80 μm thickness requires careful handling to avoid folds, and the membrane should be kept flat to prevent damage.

The NEPEM N-1135 membrane offers a compelling balance of vanadium resistance and proton conductivity for vanadium redox flow batteries, but operators must account for its narrow water content tolerance and significant thermal expansion at elevated temperatures.

Positive

  • Enhanced mechanical strength and vanadium resistance: The membrane's special tape casting process yields tensile strength ≥30 MPa and elongation ≥120%, providing structural durability against vanadium ion crossover in flow battery operation.
  • High proton conductivity in acidic environments: With conductivity ≥0.04 S/cm in 3M sulfuric acid at 25°C, the membrane supports efficient proton transport critical for vanadium flow battery performance.

Trade-offs

  • Tight water content control required: The membrane's water content specification of 5.0±3.0% implies a narrow operational window; deviations may affect conductivity or mechanical stability.
  • High thermal expansion at elevated temperatures: Thickness swelling ≤15% and linear expansion ≤18% at 100°C indicate substantial dimensional change, requiring careful thermal management during operation.

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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