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Carbon Paper

Carbon paper is specially developed for PEMFC and DMFC fuel cell applications and has consistently maintained a good performance in fuel cell efficiency tests. We have different thisckness and with/without MPL for your selection.
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CeTech’s carbon paper is specially developed for PEMFC and DMFC fuel cell applications and has consistently maintained a good performance in fuel cell efficiency tests. We have different thisckness and with/without MPL for your selection.

GDS090S/GDS180S/GDS180SHT/GDS210/GDS230/GDS250/GDS310 is a carbon paper without a Microporous Layer (MPL) and with thickness of 0.09 mm/ 0.18 mm./0.18mm/ 0.21mm/0.23mm/0.25mm/0.31mm. They are with  low-cost alternative to conventional carbon paper Gas Diffusion Layer (GDL) materials.
GDL120S/GDL210S/GDL210SHT/GDL240/GDL280/GDL340 is a carbon paper with Microporous Layer (MPL). It has a total thickness of 0.12mm/0.21mm /0.21mm/0.24m /0.28m/0.34mm. It is a great low-cost alternative to conventional carbon paper Gas Diffusion Layer (GDL) materials.

CeTech Gas Diffusion Layers (GDL) Selection Guide

Item Stationary Light Vehicle High Humidity Low Humidity
GDL240 V V V
GDL280 V V
GDL340 V

GDL210SHT and GDL240 Electrochemical Performance
Reaction Area 300 cm2 Fuel Supply Method Constant Flow
Type of Anode Fuel H2 Type of Cathode Fuel Air
Relative Humidity 100% Back Pressure Non
Battery Temperature 60°C ---
GDL GDL210SHT, GDL240, Control Group


GDL120 Electrochemical Performance
GDL120
Cell Temp (℃) Anode Cathode
70 H2, 1.2 stoic, dew point 40°C,
ambient pressure		 air, 2.4 stoic, dew point 40°C,
ambient pressure
70 H2, 1.2 stoic, dew point 50°C,
ambient pressure		 air, 2.4 stoic, dew point 50°C,
ambient pressure
80 H2, 1.2 stoic, dew point 40°C,
ambient pressure		 air, 2.4 stoic, dew point 40°C,
ambient pressure
80 H2, 1.2 stoic, dew point 50°C,
ambient pressure		 air, 2.4 stoic, dew point 50°C,
ambient pressure

Carbon Paper without Micro Porous Layer and PTFE
Measurement Units Method GDS180S GDS210 GDS230 GDS250 GDS310
Thickness mm TECLOCK SM-114 0.18 0.21 0.23 0.25 0.31
Basic Weight g/m2 ASIMID-646 50 50 65 65 80
Air Permeability sec Gurley <10 <10 <10 <10 <10
Through-Plane Resistance mΩcm2 ASTM C-611 <7 <6 <6 <6 <5
Tensile Strength (MD) N/cm ASTM D-828 25 24 24 24 20
Tensile Strength (XD) N/cm 18 20 22 22 10
Flexural Modulus (MD) MPa ASTM D-828 3500 4700 4000 4000 3500
Flexural Modulus (XD) MPa 1500 1600 1500 1500 2000
Porosity % Mercury Intrusion
Porosimeters		 70 70 70 70 70
*All data are the average values that do not represent specifications and tolerance.

Carbon Paper with Micro Porous Layer and PTFE
Measurement Units Method GDL210S GDL240 GDL280 GDL340
Thickness mm TECLOCK SM-114 0.21 0.24 0.28 0.34
Basic Weight g/m2 ASIMID-646 85 90 100 125
Air Permeability sec Gurley <225 <85 <200 <200
Through-Plane Resistance mΩcm2 ASTM C-611 <15 <15 <10 <10
Tensile Strength (MD) N/cm ASTM D-828 35 30 37 45
Tensile Strength (XD) N/cm 17 18 33 36
Flexural Modulus (MD) MPa ASTM D-790 3100 4000 4000 4600
Flexural Modulus (XD) MPa 1300 1500 1400 2400
*All data are the average values that do not represent specifications and tolerance.
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