Gas diffusion layer for fuel cells
Product Description:
The gas diffusion layer for fuel cells is a critical component in proton exchange membrane fuel cells, positioned between the catalyst layer and the bipolar plate. Its core functions include: - **Gas Diffusion**: Facilitating the transport of reactant gases from the flow field to the catalyst layer. - **Water Management**: Effectively removing water produced during the reaction, preventing flooding while maintaining optimal humidity levels. - **Support and Conductivity**: Providing mechanical support to the catalyst layer and ensuring efficient electron conduction.
| Recommended grades: | KBC-70-GDL | KBC-70-GDL2 | KBC-100-GDL | KBC-140-GDL |
| Gram weight, g/m 2： | 60 ± 5 | 72 ± 6 | 70 ± 6 | 110 ± 8 |
| Thickness, μm @ 0.025 MPa: | 160 ± 15 | 175 ± 15 | 220 ± 15 | 280 ± 20 |
| Air permeability, m 3/m2 ·min@50Pa: | >0.1 | >0.1 | >0.1 | >0.1 |
| Tensile strength, N/cm: | >40 | >40 | >40 | >60 |
| Contact resistance, mΩ·cm 2 @1.0 MPa: | Approximately 10 | Approximately 10 | Approximately 10 | Approximately 10 |
| Resistivity, mΩ·cm: | Approximately 15 | Approximately 15 | Approximately 15 | Approximately 15 |
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| Recommended grades: | KBC-R-60 | KBC-R-70 | KBC-R-100 | KBC-R-140 |
| Gram weight, g/m 2： | 35 ± 4 | 44 ± 4 | 60 ± 5 | 86 ± 6 |
| Thickness, μm @ 0.025 MPa: | 120 ± 12 | 140 ± 15 | 195 ± 15 | 260 ± 20 |
| Air permeability, m 3/m2 ·min@50Pa: | > 15 | > 15 | > 15 | > 15 |
| Porosity, %: | >80 | >80 | >80 | >80 |
| Tensile strength, N/cm: | > 40 | > 40 | > 40 | >60 |
| IP-directional thermal conductivity, W/(m·K): | ~14 | ~14 | ~14 | ~14 |
| Contact resistance, mΩ·cm 2 @1.0 MPa: | ~5 | ~5 | ~5 | ~5 |
| Resistivity, mΩ·cm: | Approximately 10 | Approximately 10 | Approximately 10 | Approximately 10 |
Carbon paper for water electrolysis
| Recommended grades: | KBC-C-180 | KBC-C-300 |
| Gram weight, g/m 2： | 136 ± 10 | 350 ± 30 |
| Thickness, μm @ 0.025 MPa: | 350 ± 40 | 400 ± 50 |
| Air permeability, m 3/m2 ·min@50Pa: | > 6.0 | > 0.5 |
| Porosity, %: | 80 | 50 |
| Tensile strength, N/cm: | >80 | |
| IP-directional thermal conductivity, W/(m·K): | ~14 | ~14 |
| Contact resistance, mΩ·cm 2 @1.0 MPa: | ~5 | ~5 |
| Resistivity, mΩ·cm: | Approximately 10 | Approximately 10 |
Carbon Felt for Flow Batteries
| Recommended grades: | KBC-PSG-4.3 | KBC-PSG-2.5 |
| Density, g/cm 3： | 0.08–0.1 | 0.08–0.1 |
| Thickness tolerance, %: | ±7.5 | ±7.5 |
| Porosity, %: | ≥95 | ≥95 |
| Specific surface area, m² 2 /g: | ≥2 | ≥2 |
| Contact resistance, mΩ·cm 2 @1.0 MPa: | ≤0.1 | ≤0.1 |
| Voltage efficiency, VE 160 mA/cm 2： | ≥85 | ≥85 |
| Energy efficiency, EE 160mA/cm 2： | ≥82 | ≥82 |
Bipolar plates for flow batteries
| Recommended grades: | KBC-BP-LG-0.8 |
| Thickness, mm: | 0.5–1.0 ± 0.04 |
| Density, g/cm 3： | ≥1.73 |
| Tensile strength, MPa: | ≥20 |
| Flexural strength, MPa: | ≥20 |
| Contact resistance, mΩ·cm 2 @1.0 MPa: | ≤15 |
| Electrical conductivity, S/cm: | ≥300 |
| Ash content, %: | ≤2 |
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