Low Through-Plane Resistance
Minimizes resistance-related energy loss and supports efficient electron transfer through the electrochemical reaction zone.
01
Product Overview
High-Performance Graphitized Carbon Electrode Substrate
DiffuCarb® Highly Graphitized Carbon Paper is specifically designed for water electrolyzers, flow batteries, and fuel cells. Compared with standard carbon papers, it provides a higher degree of graphitization and greater mechanical strength, supporting long-term use in demanding electrochemical environments.
Manufactured under heat and pressure, the material offers uniform porosity, excellent gas and liquid permeability, and outstanding electronic conductivity. It contains no PTFE or microporous layer and can be cut and installed directly as a cathode porous transport layer, electrode backing, or conductive support.
3 Standard Thickness Models
70–80% Nominal Porosity
0.21–0.40 mm Available Thickness Range
PTFE / MPL Free Untreated Surface Configuration
02
Key Features
Balanced electrical conduction, fluid transport, and structural support
High Mechanical Strength
Strong flexural and tensile performance helps the sheet remain stable during cutting, installation, compression, and long-term operation.
Uniform Thickness
Promotes even compression, current distribution, and fluid transport while reducing localized warping and poor contact.
Highly Graphitized and Pure
Provides good electronic conductivity and chemical stability for research and engineering applications.
Consistent Porosity
Maintains continuous pathways for gas and liquid transport, supporting hydrogen release and uniform electrolyte distribution.
PTFE- and MPL-Free
Supplied without hydrophobic treatment or a microporous layer for direct use or further surface modification.
03
Specifications Comparison
Models arranged from lowest to highest thickness
| Model | Thickness (mm) | Porosity (%) | Through-Plane Resistance (mΩ·cm) | Flexural Strength (MPa) | Tensile Strength (N/cm) |
|---|---|---|---|---|---|
| A210R | 0.21 | 70–80 | 70–80 | 40–50 | 60–70 |
| A330R | 0.33 | 70–80 | 70–80 | 40–50 | 80–90 |
| A400R | 0.40 | 70–80 | 70–80 | 40–50 | 120–130 |
Note: Values are nominal product ranges. Actual performance may vary with sheet size, compression ratio, contact pressure, electrolyte chemistry, operating temperature, and electrode or cell design.
04
Applications
Suitable for electrochemical devices and energy-storage systems
Cathode PTL for Water Electrolyzers
- Supports cathode gas and liquid transport
- High porosity facilitates hydrogen evolution
- Provides a stable electrode or catalyst-layer backing
- Suitable for laboratory testing and system development
Flow Battery Electrodes or Backings
- Vanadium redox flow batteries
- Zinc-bromine flow batteries
- Iron-chromium flow batteries
- Increases electrolyte contact area and utilization
Fuel Cells and Electrochemical Fixtures
- Fuel cell cathode backing
- Conductive layer between the electrode and bipolar plate
- Uniform fluid transport and compression support
- Custom cell fixtures and electrochemical reactors
05
Model Selection Guide
Select according to thickness, support requirements, and cell configuration
A210R
Thickness: 0.21 mm
Suitable for high-power-density applications, limited assembly space, and cell designs requiring a shorter transport path or lower compressed thickness.
A330R
Thickness: 0.33 mm
Balances thickness, mechanical strength, and transport performance for general laboratory research, engineering evaluation, and industrial use.
A400R
Thickness: 0.40 mm
Provides greater tensile strength and structural support for high-capacity applications, larger sheets, large-scale storage systems, or higher compression.
06
Product Models, Dimensions & Price List
Standard cut sizes and reference lead time
| Product Model / Thickness | 5×5 cm | 10×10 cm | 20×20 cm | 30×30 cm | 40×40 cm | Lead Time |
|---|---|---|---|---|---|---|
| A210R 0.21 mm | $8 | $20 | $60 | $120 | $200 | 1 day |
| A330R 0.33 mm | $8 | $20 | $60 | $120 | $200 | 1 day |
| A400R 0.40 mm | $8 | $20 | $60 | $120 | $200 | 1 day |
Pricing and Storage Notes
- Prices include standard packaging and exclude international shipping.
- Greater thickness generally provides higher durability and structural support; select according to the electrolyzer, flow battery, or fixture design.
- Store unused sheets in a dry, clean, and sealed environment. Avoid contamination by dust, oil, moisture, or handling residues.
07
Usage Instructions
Cutting, installation, pre-wetting, thickness selection, and storage
1
Cutting and Cleaning
Cut the carbon paper to the required electrode or flow-field dimensions using a clean tool. Avoid frayed edges, oil contamination, and loose carbon fibers.
2
Installation and Compression
Place the sheet flat in the cathode or electrode position. Apply uniform compression and avoid localized over-compression, folding, warping, or blocked flow channels.
3
Pre-Wetting
Before initial use in a liquid-phase system, pre-soak the material with the intended electrolyte when required to improve fluid distribution through the porous structure.
4
Match Thickness to the Application
Choose A210R for thin or high-power configurations, A330R for balanced laboratory and industrial use, and A400R for higher support, capacity, or large-scale systems.
5
Long-Term Maintenance
Keep the material away from dust, oil, and unnecessary direct contact with strong acids or bases. Store it dry and sealed. Mild acid washing or electrochemical cycling may be used when appropriate for the experimental protocol.
International Orders & Shipping
Standard sizes, bulk quantities, research procurement, and international shipping support are available for laboratories, universities, and industrial customers.
Email contact@scimaterials.cn
WhatsApp & Tel +86 153-7569-8751
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