Excellent Conductivity
Low in-plane resistance supports efficient electron transport: CP-H450R is below 9 mΩ·cm² and CP-H850R is below 7 mΩ·cm².
01
Product Overview
DiffuCarb® CP-H450R / CP-H850R High-Graphitized Carbon Paper
DiffuCarb® high-graphitized carbon paper is manufactured from graphitized carbon fibers to provide efficient electronic conduction, stable porous transport, and dependable structural support in demanding electrochemical environments.
CP-H450R and CP-H850R are especially suitable as cathode porous transport layers for water electrolysis. Their high porosity supports gas and electrolyte movement, while optional PTFE treatment or a microporous layer can be specified for customized wettability, interface management, or catalyst-loading requirements.
2 Standard Models
70–80% Nominal Porosity
0.45 / 0.85 mm Thickness Options
PTFE / MPL Optional Customization
02
Key Features
Conductivity, corrosion resistance, porous transport, and flexible customization
Corrosion Resistance
The graphitized carbon fiber structure is suitable for alkaline or neutral electrolyte environments and long-term electrochemical use.
High Porosity
A nominal porosity of 70–80% facilitates gas release, electrolyte movement, and mass transport through the porous network.
Two Thickness Options
Select 0.45 mm for a thinner transport layer or 0.85 mm for greater thickness, support, and compression accommodation.
Optional PTFE Treatment
PTFE treatment can be customized when hydrophobicity and gas-liquid management need to be adjusted for the target device.
Optional Microporous Layer
A customized MPL can support catalyst-layer interfaces, controlled pore structure, and application-specific surface requirements.
03
Technical Specifications
Model comparison arranged by increasing thickness
| Model | Material Type | Thickness (mm) | Areal Density (g/m²) | Porosity (%) | In-Plane Resistance (mΩ·cm²) | PTFE Treatment | Microporous Layer |
|---|---|---|---|---|---|---|---|
| CP-H450R | Graphite Fiber Paper | 0.45 | 200 | 70–80 | <9 | Customizable | Customizable |
| CP-H850R | Graphite Fiber Paper | 0.85 | 400 | 70–80 | <7 | Customizable | Customizable |
Values are nominal product specifications. Final performance may vary with sheet dimensions, compression, contact pressure, electrolyte, temperature, surface treatment, and device configuration.
04
Applications
Designed for electrolysis, fuel-cell, and electrochemical research systems
Water Electrolysis Cathode PTL
- Supports efficient hydrogen release
- Provides electronic conduction and porous transport
- Suitable for alkaline or neutral cathode environments
- Available for research cells and device development
Fuel Cell Electrode Substrate
- Functions as an anode or cathode support layer
- Helps distribute current and compression uniformly
- Optional PTFE treatment for water-management needs
- Optional MPL for interface customization
Electrochemical Research
- Catalyst-loading and coating studies
- Electrode-material evaluation
- Fundamental electrochemical experiments
- Custom cells, fixtures, and prototype devices
05
Model Selection Guide
Select according to transport-layer thickness, support, and cell design
CP-H450R
Thickness: 0.45 mm
Recommended when a thinner porous transport layer, lower assembly thickness, or moderate structural support is required.
CP-H850R
Thickness: 0.85 mm
Recommended for applications requiring a thicker porous substrate, greater support, or increased compression accommodation.
06
Price List
USD reference prices per sheet for standard untreated material
| Model | Thickness (mm) | 5×5 cm | 10×10 cm | 20×20 cm | 30×30 cm | 40×40 cm | 50×50 cm |
|---|---|---|---|---|---|---|---|
| CP-H450R | 0.45 | $10 | $25 | $75 | $150 | $250 | $300 |
| CP-H850R | 0.85 | $10 | $25 | $75 | $150 | $250 | $350 |
Pricing Notes
- Prices are reference values for one standard sheet and exclude shipping.
- Custom dimensions are available upon request.
- PTFE treatment and microporous-layer coating are optional and priced separately.
- Bulk discounts are available for research institutions and industrial orders.
07
Storage, Handling & Catalyst Coating
Recommended preparation, installation, storage, and coating practices
1
Storage
Keep the material in a dry, ventilated location away from direct sunlight. Store it sealed in the original packaging to reduce moisture uptake, dust, and accidental contamination.
2
Cutting and Surface Cleanliness
Cut the sheet to the required dimensions using clean tools. Keep the surface free from dust, grease, oil, loose fibers, and other contaminants that may affect electrical contact.
3
Cell Assembly
Align the carbon paper correctly and apply uniform pressure during electrolyzer or fuel-cell assembly. Avoid folding, localized over-compression, and uneven contact with the flow field.
4
Catalyst Ink Preparation and Application
Prepare and thoroughly mix the intended catalyst ink, such as Pt-, Ir-, or Ni-based formulations. Apply it uniformly by spray coating or brush coating while avoiding aggregation, dripping, or streaking.
5
Drying and Adhesion
Dry the coated carbon paper at approximately 40–60°C to remove solvent and improve adhesion. Mild pressing or an appropriate thermal treatment may be used when stronger attachment is required.
Handling Notice
- Avoid direct contact with strong acids, strong alkalis, or corrosive chemicals during storage.
- Confirm catalyst, ionomer, solvent, PTFE, and MPL compatibility before treatment.
- Process temperatures and pressures should be selected according to the actual formulation and device design.
International Orders & Shipping
Order standard sheet sizes through Amazon or contact us for custom dimensions, PTFE treatment, microporous-layer coating, bulk quantities, and international delivery arrangements.
Email
contact@scimaterials.cn
WhatsApp & Tel +86 153-7569-8751
Amazon Store
Open Product Page
Worldwide Shipping DHL / FedEx / UPS / SF-Express
Bulk Orders Quantity discounts available upon request
Payment Methods Bank Wire / PayPal / Credit Card / Alipay / WeChat Pay
