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NEPEM N-114 Proton Exchange Membrane 100μm for VRFB

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NEPEM N-114 grade proton exchange membrane for vanadium flow batteries, 100μm, conductivity ≥0.100 S/cm, tensile ≥30 MPa, acid capacity 1.00 meq/g. In stock.

SKU: AFMSIGMC200
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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) 100
Weight (g/m²) 197
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 membrane requires careful moisture management to maintain specified water content and minimize swelling in aqueous environments. It is designed for vanadium redox flow batteries and exhibits compatibility with sulfuric acid electrolytes up to 3M concentration.

  • Water Content Control: Maintain the membrane within the specified water content range of 2.0% to 8.0% to prevent excessive swelling or dehydration that could compromise dimensional stability and proton conductivity.
  • Swelling Management: Monitor thickness swelling in water at 23°C to not exceed 5% and at 100°C to not exceed 15% to avoid mechanical stress and delamination in the cell assembly.
  • Acid Compatibility: Ensure the membrane is preconditioned in sulfuric acid electrolyte concentrations up to 3M to activate proton exchange capacity without compromising vanadium resistance.
  • Linear Expansion Control: Control linear expansion in water at 23°C to ≤5% and at 100°C to ≤18% to prevent bowing or misalignment during cell stack assembly.

How does the NEPEM N-114 membrane balance high proton conductivity with dimensional stability given its 50% water uptake and limited thickness swelling?

The NEPEM N-114 achieves a proton conductivity ≥0.100 S/cm (23°C, 100%RH) while maintaining thickness swelling ≤5% at 23°C and ≤15% at 100°C, and linear expansion ≤5% and ≤18% at the respective temperatures. This indicates that the membrane's reinforced tape-cast structure effectively constrains swelling even at 50% water uptake, preserving mechanical integrity and reducing performance trade-offs under normal VFB operating conditions.

Is the NEPEM N-114 membrane directly compatible with standard vanadium flow battery electrolytes such as 3M H₂SO₄, and does it require preconditioning before use?

Yes, the membrane is designed for vanadium flow batteries and its normal conductivity (≥0.04 S/cm at 25°C in 3M H₂SO₄) confirms compatibility with that electrolyte. However, the as-received water content is only 5% versus the equilibrium water uptake of 50%, so a hydration step may be necessary to reach optimal proton conductivity, though the description does not explicitly mandate preconditioning prior to integration.

What storage and handling conditions are recommended for the NEPEM N-114 membrane to prevent degradation of its ion exchange capacity and mechanical properties?

The membrane should be stored in a clean, low-humidity environment at 23°C and 50% RH — the standard testing conditions — to maintain its low water content (5%) and avoid premature swelling. Exposure to liquid water or high humidity can trigger up to 18% linear expansion at 100°C, which may complicate handling and lamination. The membrane has acid capacity of 1.00±0.05 meq/g, which is stable under dry storage.

This proton exchange membrane for vanadium flow batteries offers enhanced vanadium resistance and high proton conductivity, but its significant dimensional changes at elevated temperatures and sensitivity to moisture content require careful system design and conditioning protocols.

Positive

  • Enhanced vanadium resistance: Special materials in the tape casting process improve resistance to vanadium ion crossover, extending membrane lifespan in vanadium redox flow battery operation.
  • High proton conductivity: Conductivity ≥0.100 S/cm at 23°C/100%RH and ≥0.04 S/cm in 3M H₂SO₄ enables efficient proton transport, supporting high current density and energy efficiency.

Trade-offs

  • Significant thermal dimensional change: Thickness swelling up to 15% and linear expansion up to 18% at 100°C water exposure require thermal management and mechanical accommodation in stack design.
  • Critical moisture content sensitivity: Water content specified at 5.0±3.0% and water uptake at 50.0±5.0% indicate that deviations from optimal hydration can alter performance, necessitating controlled storage and conditioning.

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.

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