SGL Sigracet Carbon Paper

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SGL Sigracet Carbon Paper

SGL Sigracet Carbon Paper

Product Description
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SGL SIGRACET® Carbon Paper

Premium Carbon Fiber-Based Gas Diffusion Media for Fuel Cells & Electrochemical Systems
SIGRACET® carbon paper from SGL Carbon is a high‑performance gas diffusion layer (GDL) material widely used in PEM fuel cells, electrolyzers, metal‑air batteries, and advanced electrochemical research. A gas diffusion layer plays a critical role in enabling efficient gas transport, effective water management, and robust electrical conductivity between catalyst layers and current collectors. (SGL Carbon)

Available Models & Sizes
Common SIGRACET® GDL Grades
Model Typical Thickness Areal Weight Structure
22BB ~215 µm ~70 g/m² Non‑woven carbon paper with MPL
28BC ~235 µm ~105 g/m² Non‑woven carbon paper with MPL
36BB ~280 µm ~105 g/m² Non‑woven carbon paper with MPL
39BB ~315 µm ~95 g/m² Non‑woven carbon paper with MPL
All models include a hydrophobic microporous layer (MPL) with PTFE for improved water management and flood prevention. (SGL Carbon)

Typical Sizes (cm)
  • 5 × 5 cm
  • 10 × 10 cm
  • 20 × 20 cm
  • 30 × 30 cm
  • 40 × 40 cm
Custom sizes available upon request.

Technical Specifications
Property 22BB 28BC 36BB 39BB
Thickness 215 ± 20 µm 235 ± 25 µm 280 ± 20 µm 315 ± 20 µm
Areal Weight 70 ± 15 g/m² 105 ± 10 g/m² 105 ± 15 g/m² 95 ± 15 g/m²
Electrical Resistivity (through plane) <10 mΩ·cm² <11 mΩ·cm² <12 mΩ·cm² <13 mΩ·cm²
Thermal Conductivity ~0.30 W/m·K ~0.38 W/m·K ~0.43 W/m·K ~0.20 W/m·K
Gas Permeability (Gurley) ~1.2 sec ~4.5 sec ~3.0 sec ~1.5 sec
Compressibility (1 MPa) ~20% ~11% ~14% ~27%
Bending Stiffness (MD/TD) 1.5/0.9 N·mm 1.7/1.2 N·mm 3.6/3.2 N·mm 3.5/2.9 N·mm
Water Contact Angle (MPL) >130° >130° >130° >130°
Tensile Strength (MD/TD) ~6.9/4.6 MPa ~6.6/5.1 MPa ~8.5/8.1 MPa ~7.7/4.9 MPa
PTFE Treatment ~5 wt% (substrate) + MPL ~5 wt% + MPL ~5 wt% + MPL ~5 wt% + MPL
Data are typical values and may vary by lot and processing. (SGL Carbon)

Product Features & Benefits
Advanced Gas Diffusion Technology
•PTFE‑treated microporous layer (MPL) prevents flooding and supports effective water management crucial for PEM fuel cells and electrolyzers. (SGL Carbon)
•Hydrophobic surface with high water contact angle (>130°) improves gas/liquid separation. (SGL Carbon)
Optimized for Electrochemical Performance
•Balanced electrical conductivity and thermal stability enhance stack efficiency and long‑term reliability. (SGL Carbon)
•Controlled compressibility supports uniform contact pressure and stable cell assembly.
Mechanical Robustness
•Reinforced carbon fiber matrix delivers excellent bending stiffness and tensile strength for stack assembly. (SGL Carbon)
High Manufacturing Consistency
•Engineered for low intra‑ and inter‑lot variability and high surface flatness, ensuring reproducibility between batches. (Beyond Battery)

Typical Applications
•PEM Fuel Cells — Gas diffusion media in both cathode and anode electrodes.
•PEM Electrolyzers — Electrochemical water splitting systems requiring reliable gas/water transport.
•Metal–Air Batteries — Gas electrode support layers for Zn‑air or Li‑air systems.
•Electrochemical Research — Bench‑scale and industrial research where water management and conductivity are essential.
SIGRACET® GDLs are commonly selected based on operating conditions such as desired porosity, thickness, and conductivity for high current density systems. (SGL Carbon)

How to Choose the Right SIGRACET® GDL
•High Porosity & Water Management: 39BB is often used where excellent gas transport and water control are critical.
•Balanced Performance: 28BC provides good mechanical and gas diffusion performance for general PEMFC and stationary applications.
•Increased Thickness & Strength: 36BB offers higher thickness and stiffness, beneficial for systems with higher compression loads.
•Cost‑Effective GDL: 22BB provides lower thickness and weight with essential performance where minimal material bulk is important.

Customization Options
•Custom sizes and roll formats
•Specific thickness and treatment levels
•Batch traceability documentation

Packaging & Handling
•Clean, protective packaging
•Rolls, sheets, or stacked formats
•Sensitive to dust — handle with clean tools

Contact & Support
For custom specifications, bulk orders, or technical inquiries, please contact us:
Email: support@franklab.shop

 

FrankLab offers worldwide shipping.Orders are normally shipped from our facility in Hangzhou, China within 1-2 business days after the payment is made. It is very important that the correct shipping address is entered at checkout. We are not responsible for incorrect or undeliverable addresses.

 

Shipping Fees

Orders below USD 499 : Shipping fee of USD 14.90

Orders USD 499 and above: Free worldwide shipping

 

Large Orders & Bulk Discounts

For orders over USD 3,000, please contact our customer support team to check special pricing or potential bulk discounts before placing your order.

IMPORTANT: All goods must be inspected immediately upon delivery. Any shipping damage, missing items, or product defects must be reported to both Franklab team and the shipping carrier within 24 hours of delivery. Failure to report issues within this timeframe may result in your claim being denied. Please retain all original packaging materials, as they may be required for filing a damage claim. 

Contact Us

For shipping, returns, or bulk order inquiries, please contact:
support@franklab.shop

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