CeTech GDS/GDL Series Roll-Form Carbon Paper

Overview

The CeTech GDS/GDL Series Roll-Form Carbon Paper is a precision-engineered gas diffusion layer (GDL) substrate designed for high-throughput, continuous manufacturing of membrane electrode assemblies (MEAs) in proton exchange membrane fuel cells (PEMFCs) and electrolyzers. Manufactured by CeTech (Carbon Energy Technology), a Taiwan-based materials science company founded in 2006, this roll-form carbon paper leverages proprietary carbon fiber mat consolidation, controlled thermal treatment, and surface hydrophobicity optimization to deliver consistent through-plane conductivity, mechanical stability under compression, and uniform porosity distribution across the full web width. Unlike discrete sheet formats, the roll configuration enables seamless integration into automated coating, hot-press lamination, and roll-to-roll (R2R) MEA production lines—reducing material waste, minimizing handling-induced defects, and supporting scalable commercialization pathways aligned with ISO 14687-2 (hydrogen purity) and DOE Hydrogen and Fuel Cell Program targets for stack durability.

Key Features

• Roll-form geometry with standardized 400 mm web width and customizable lengths (50–100 m per roll), optimized for industrial R2R processing
• Two structural variants: microporous layer (MPL)-coated and MPL-free configurations, enabling tailored interfacial resistance and catalyst layer adhesion control
• Controlled bulk resistivity (< 20 mΩ·cm in-plane, typical; measured per ASTM F3097–17) and engineered hydrophobicity (PTFE loading: 5–30 wt%, adjustable)
• Consistent thickness tolerance (±5 µm) and tensile strength (>15 MPa, machine direction) validated across full roll length
• Thermally stable up to 400 °C in inert atmosphere, compatible with standard MEA hot-pressing cycles (130–170 °C, 3–10 MPa)
• Traceable lot documentation including SEM micrographs, BET surface area reports, and contact angle measurements

Sample Compatibility & Compliance

This carbon paper is fully compatible with standard PEMFC catalyst inks (e.g., Pt/C, PtCo/C dispersions), ionomer solutions (Nafion® D520/D521), and transfer printing techniques. It meets dimensional and functional specifications referenced in key industry standards including SAE J2718 (fuel cell component qualification), ISO 21927-1 (GDL performance testing methods), and US Department of Energy’s Multi-Year Technical Plan (MYTP) GDL benchmark criteria. All production lots undergo incoming inspection per internal QA protocol aligned with ISO 9001:2015 and support GLP-compliant documentation packages upon request. CE marking is not applicable, as this is a raw material substrate—not a finished device—though it conforms to RoHS Directive 2011/65/EU for restricted substances.

Software & Data Management

As a passive material substrate, the CeTech GDS/GDL Series does not incorporate embedded electronics or firmware. However, comprehensive digital traceability is provided via batch-specific Certificates of Analysis (CoA), including: fiber morphology data (SEM imaging at ×500–×5000 magnification), pore size distribution (mercury intrusion porosimetry, 3–100 µm range), air permeability (ASTM D737), and electrical resistance mapping (4-point probe scan over 100 mm × 100 mm grid). CoAs are delivered in PDF format with embedded metadata (batch ID, date of manufacture, QC analyst ID) and may be integrated into customer LIMS or ERP systems via standardized CSV exports upon agreement.

Applications

• Continuous MEA fabrication for automotive and stationary PEMFC stacks
• R&D-scale catalyst layer deposition studies (spray coating, slot-die, gravure)
• Electrolyzer anode/cathode substrates for PEM water electrolysis (PEMWE)
• Benchmarking studies against alternative GDL architectures (e.g., carbon cloth, metal foams)
• Accelerated stress testing (AST) of interfacial degradation mechanisms under dynamic humidity cycling
• Validation of ink–substrate interaction models using in situ X-ray tomography or neutron imaging

FAQ

Is this carbon paper certified to ISO/TS 16949 or IATF 16949?
No—IATF 16949 applies to automotive component manufacturers with design responsibility. CeTech operates under ISO 9001:2015 for GDL material production; certification scope excludes automotive process-specific requirements.
Can CeTech provide custom PTFE loadings or MPL compositions?
Yes—custom formulations (e.g., graded PTFE distribution, binary carbon/black MPLs) are available under NDA and minimum order quantities (MOQ: 200 m per configuration).
What is the shelf life and recommended storage condition?
Store unopened rolls at 23 ± 5 °C and 40–60% RH in sealed aluminum-laminated packaging. Shelf life: 24 months from date of manufacture when stored per specification.
Do you offer sample rolls for process validation?
Yes—evaluation rolls (5 m, 400 mm width) are available for qualified technical partners under material evaluation agreements (MEAs) with defined confidentiality terms.
Are test reports compliant with FDA 21 CFR Part 11?
Not applicable—Part 11 governs electronic records/signatures for regulated medical devices. As a non-medical, non-regulated raw material, CeTech provides audit-ready paper-based CoAs and digital PDFs without electronic signature infrastructure.