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NEPEM N-1125 Proton Exchange Membrane 62μm for VRFB

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NEPEM N-1125 proton exchange membrane for VRFB. 62μm thick, 122g/m², ≥0.100 S/cm conductivity. Improved moisture retention and vanadium resistance. Order now.

SKU: AFMSMJLG990
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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) 62
Weight (g/m²) 122
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

This proton exchange membrane requires controlled humidity and temperature to maintain its specified water content and dimensional stability. Exposure to liquid water or elevated temperatures may cause swelling beyond acceptable limits, compromising performance in vanadium flow battery applications.

  • Moisture Control: Maintain membrane water content within the specified 5.0±3.0% range to prevent dimensional changes and performance loss.
  • Temperature Management: Limit thermal exposure to prevent thickness swelling beyond 5% at 23°C and 15% at 100°C in water.
  • Mechanical Handling: Avoid exceeding tensile strength of 30 MPa and elongation of 120% to prevent mechanical failure during installation.

How does the NEPEM N-1125 membrane balance proton conductivity with mechanical strength for vanadium flow battery applications?

The NEPEM N-1125 achieves a tensile strength of ≥30 MPa and elastic modulus ≥400 MPa while maintaining a conductivity of ≥0.100 S/cm at 23°C and 100% RH, and ≥0.04 S/cm in 3M H₂SO₄ at 25°C. Its water uptake of 50.0±5.0% supports ion transport without excessive dimensional change, as thickness swelling is ≤5% at 23°C. This balance is enabled by special tape-cast materials designed for vanadium flow battery operation.

What makes the NEPEM N-1125 membrane compatible with vanadium flow battery electrolytes?

The membrane incorporates special materials in the tape casting process to improve vanadium resistance, reducing crossover and maintaining performance. It has an acid capacity of 1.00±0.05 meq/g and retains normal conductivity of ≥0.04 S/cm in 3M H₂SO₄ at 25°C, which is typical for vanadium flow battery electrolyte conditions. Its 62 μm thickness provides a low-resistance path while preserving mechanical integrity.

What precautions are necessary when handling the 62 μm thick NEPEM N-1125 membrane during cell assembly?

The membrane is 62 μm thick with a tensile strength of ≥30 MPa and elongation at break ≥120%, making it flexible but requiring careful handling to avoid creases or punctures. Linear expansion at 23°C is ≤5%, so it can be cut to size without significant dimensional change. Use clean, non-abrasive tools and avoid exposure to extreme humidity to maintain specified water uptake of 50.0±5.0% and thickness swelling limits of ≤5% at 23°C.

NEPEM N-1125 is a proton exchange membrane specifically formulated for vanadium flow batteries, featuring enhanced mechanical strength and vanadium ion resistance achieved through proprietary tape casting. While offering high proton conductivity and acid capacity, its significant dimensional swelling at elevated temperatures and high water uptake require careful cell design and hydration management.

Positive

  • Enhanced mechanical strength and vanadium resistance: Tensile strength ≥30 MPa and elastic modulus ≥400 MPa combined with special materials in tape casting improve durability and resistance to vanadium ion crossover in flow battery operation.
  • High proton conductivity under hydrated conditions: Conductivity ≥0.100 S/cm at 23°C and 100% RH, and ≥0.04 S/cm in 3M H₂SO₄, enables efficient ion transport for practical current densities in vanadium redox flow cells.

Trade-offs

  • Significant swelling at elevated temperatures: Thickness swelling up to 15% and linear expansion up to 18% at 100°C water introduces mechanical stress in cell stacks, necessitating robust assembly tolerances and thermal management.
  • High water uptake with dimensional change risk: Water uptake of 50%±5% drives hydration-driven expansion (≤5% at 23°C), which may cause membrane wrinkling or loss of contact with electrodes during long-term cycling if not properly controlled.

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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