Carbon paper for fuel cells
Product Description:
Carbon paper, a critical material for the gas diffusion layer in proton exchange membrane fuel cells, directly influences the battery’s efficiency and lifespan. As part of the gas diffusion layer, it supports the catalyst layer while facilitating the diffusion of oxygen and hydrogen gases, conducting electrical current, and efficiently removing water produced during the reaction.
| 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 |
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1. Using flexible graphite as the base material and adding reinforcing agents to make it thinner yet stronger;
2. Raw materials undergo purification treatment, resulting in higher purity and improved durability;
3. By adopting new material technologies, we have significantly boosted mass production capacity while reducing costs.
Gas diffusion layer for fuel cells
| 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 |
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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