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CeTech was established in September, 2006 based on the notion of creating “Clean Energy Technology”. We are located in Taichung (Central Taiwan), Taiwan. We use carbon materials to produce gas diffusion layers (GDL) for fuel cells. CeTech has a strong and experienced R/D team that can provide high quality and performance products. We offer products with great performance and the best price in the market. GDL development is currently our first priority. We will also strive continuously to introduce new fuel cell technologies and other carbon related products to benefit our customers as we keep them on the leading edge.
Carbon Paper: N Series
N series of CeTech is a porous carbon paper that adapts PAN-based carbon-fiber with high gas-permeability and conductivity. The 2nd generation of carbon substrate has very even pore size in carbon structure, and to reorganize this character, please look into the properties “bubble point” and “pore size” shown in the sheet below. The other feature we emphasize is “Tensile Property” showing the mechanical strength, which is also what users may have lots of concern when assembling. Our paper material is suitable for all the full cell configurations. Please find the sheet below for CeTech current products of N series. For the details or any help, you are welcome to contact us.
|
Property |
Unit |
Methond |
N0S1005 |
N1S1005 | |
| Thickness |
|
|
|
|
|
@6.9kPa(@1psi) |
Micron |
ASTM D-645 |
190 |
240 |
|
@5.9kPa(@7.3psi) |
170 |
230 |
| Basis Weight |
g/m2 |
N/A |
45 |
80 |
| Tensile Strength |
|
|
|
|
|
Machine Direction |
kgf |
ASTM D-828 |
7.0 |
9.8 |
|
Cross machine Direction |
5.0 |
6.2 |
| Stiffness |
|
|
|
|
|
Machine Direction |
Mpa |
ASTM D-790-07 |
4700 |
5870 |
|
Cross machine Direction |
1300 |
1885 |
| Bulk Density @6.9kpa |
g/cm3 |
Weight / Thickness |
0.24 |
0.33 |
| Air Permeability |
|
|
|
|
|
Through-Plane
Permeability |
sec/100cc |
Gurley |
<1 |
20 |
| Compressibility |
% |
(30psi-200psi)/
30psi*100% |
64 |
40 |
| Through-Plane Resistance |
mÙ* cm2 |
ASTM C-611-98 |
2.36 |
5.30 | |
| Type |
Carbon Paper Substrate |
Carbon paper + MPL | |
Carbon Cloth: W Series
W series is a unique design for carbon cloth GDL. The 2nd generation of carbon substrate in woven type is developed to be highly suitable for the MEA process. Currently, we have two different carbon cloths in the new generation, in which they are typically varied in thickness. This series product items can all be furthermore adjusted the hydrophobicity level to ensure the best fuel cell efficiency. Please be informed that advantages of W Series include its high strength and even pore size; besides, the two proprieties can also be reinforced by MPL coating. Please find the sheet below for CeTech current products of W series. For more details or help, you are surely welcome to contact us.
|
Property |
Unit |
Method |
W0S1002 |
W1S1002 | |
| Thickness |
|
|
|
|
|
@6.9kPa(@1psi) |
Micron |
ASTM D-645 |
340 |
410 |
|
@5.9kPa(@7.3psi) |
300 |
390 |
| Basis Weight |
g/m2 |
N/A |
121 |
187 |
| Tensile Strength |
|
|
|
|
|
Machine Direction |
kgf |
ASTM D-828 |
4.5 |
6.4 |
|
Cross machine Direction |
3.7 |
4.2 |
| Stiffness |
|
|
|
|
|
Machine Direction |
Mpa |
ASTM D-790-07 |
- |
- |
|
Cross machine Direction |
- |
- |
| Bulk Density @6.9kpa |
g/cm3 |
Weight / Thickness |
0.36 |
0.46 |
| Air Permeability |
|
|
|
|
|
Through-Plane
Permeability |
sec/100cc |
Gurley |
- |
- |
| Compressibility |
% |
(30psi-200psi)/
30psi*100% |
32 |
32.4 |
| Through-Plane Resistance |
mÙ* cm2 |
ASTM C-611-98 |
1.96 |
5.17 | |
| Type |
Carbon Paper Substrate |
Carbon paper + MPL | |
* Evaluated on 11.43 cm2 sample
**quadrate copper plate contact under 1MPa, testing area 25cm2
Tafel Test
Performance of CeTech gas diffusion layers (Carbon Cloth with MPL)in PEMFC
Performance of CeTech gas diffusion layers (carbon paper with MPL) in PEMFC
Testing Condition：
- 25cm2 Tri-Serpentine Graphite Flow Field
- Single Cell
- Ambient Pressure
- 90%RH, 60°C, H2/Air 1.5/2
Part Number Algorithm
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