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Gas Diffusion Layer （GDL） Gas diffusion backing (GDB)
Classification:
Green Hydrogen Energy
- Product Description
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Gas Diffusion Layer (GDL) and Gas diffusion backing(GDB)
Our GDL is the first domestic mass production product of gas diffusion layer that adopts the roll-to-roll production process. We have launched three series of standard products and provide customized services for liquid-cooled fuel cells, air-cooled fuel cells and hydroelectrolysis cells.Our coil width can be up to 1.2 meters to meet more needs. Annual production capacity of 1.1 million square meters.
Gas Diffusion Layer Features
Strong conductivity
Strong water management ability
Excellent air permeability
High mechanical strength
Long durability
Smooth Surface
Gas Diffusion Layer (GDL)Selection TableTechnical Projects unit Technical requirements GDL-S-16 GDL-S-18 GDL-S-20 GDL-F-24 GDL-F-28 Thickness@50KPa μm 160±20 180±20 200±20 240±20 280±20 Thickness @1MPa μm 125±20 150±20 160±20 210±20 240±20 Area Density g/m² 55±5 60±5 63±5 100±6 110±6 TP area resistance @1MPa mΩ•cm2 ≤9 ≤10 ≤11 ≤11 ≤12 IP Resistivity mΩ•cm ≤30 ≤30 ≤30 ≤20 ≤20 IP air permeability coefficient@1MPa μm2 ≥2.5 ≥2.5 ≥2.5 ≥2 ≥2 Gas flux@0.1bar m³/(m²·h) ≥800 ≥800 ≥800 ≥300 ≥300 Tensile strength MD MPa ≥10 ≥10 ≥10 ≥15 ≥13 Tensile strength TD MPa ≥6 ≥6 ≥6 ≥9 ≥8 Bending stiffness MD Taber ≥5.0 ≥5.0 ≥10.0 ≥20 ≥24 Bending stiffness TD Taber ≥2.5 ≥2.5 ≥5.0 ≥10 ≥12 Gas diffusion backing(GDB) Selection Table
Parameter Unit GDB-14 GDB-18 GDB-22 GDB-26 Thickness under 50kpa μm 140±20 180±20 220±20 260±20 Thickness under 1Mpa μm 110±15 140±15 185±20 220±20 Surface density g/m² 40±5 47±5 83±6 90±6 TP area resistance under 1Mpa mΩ·cm2 ≤8 ≤9 ≤10 ≤11 IP resistivity mΩ·cm ≤30 ≤30 ≤20 ≤20 IP permeability coefficient under 1Mpa μm2 ≥2.5 ≥2.5 ≥2 ≥2 Air flux under 0.1bar m³/(m²·h) ≥1200 ≥1200 ≥500 ≥500 MD Tensile strength MPa ≥8 ≥8 ≥15 ≥15 TD Tensile strength MPa ≥4 ≥4 ≥9 ≥9 MD Bend stiffness Taber ≥5 ≥5 ≥20 ≥24 TD Bend stiffness Taber ≥2.5 ≥2.5 ≥10 ≥12
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