Gas Diffusion Layer Gdl

Product Description

SSI-GH is the first in China to use a roll-to-roll process to produce gas diffusion layers. At present, the maximum width of the product can reach 1.2m, which is more suitable for automatic production.The product has stronger electronic conductivity, stronger water management ability, excellent air permeability, high mechanical strength, appropriate rigidity and flexibility, excellent chemical stability and thermal stability under the advantages of ultra-thin,structural Tight and surface balanced for high durability. We have realized the full-process manufacturing and online process quality control from base paper-carbon paper-gas diffusion layer,and at the same time have better product consistency, and some product performance indicators have reached the international advanced level. At present, we have launched gas diffusion layer products suitable for air-cooled hydrogen fuel cells, liquid-cooled hydrogen fuel cells and cathodes of PEM water electrolysis hydrogen production electrolyzers.

Gas Diffussion Layer type for cooled hydrogen fuel cell

items	Parameter	Model selection for fuel cell
		GDL-S-16	GDL-S-18	GDL-S-20	GDL-S-22
1	Thickness(um)@50KPa	160±20	180±20	200±20	220±20
	Thickness(um)@1Mpa	125±20	150±20	160±20	170±20
2	Resistance(mΩ•cm²)@1Mpa	≤9	≤10	≤11	≤12
3	surface density(g/m²)	55±5	58±5	60±5	65±5
4	Tensile strength MD(MPa)	≥10	≥10	≥8	≥8
	Tensile strength TD(MPa)	≥6	≥6	≥5	≥5
5	Air flux(m³/(m²h) @0.1bar	≥800	≥800	≥800	≥800
6	Polarisability(V)*@1500mA/cm²	≥0.65	≥0.65	≥0.65	≥0.65
	Polarisability(V)*@2000mA/cm²	≥0.60	≥0.60	≥0.60	≥0.60
7	Contact angle	≥150°	≥150°	≥150°	≥150°
8	Stiffness MD	≥5.0	≥5.0	≥10.0	≥10.0
	Stiffness TD	≥2.5	≥2.5	≥5.0	≥5.0

Apply to fuel cell stack,Fuel cell module,Fuel cell vehicle system integration.

GDL Selection Table for Electrolytic cell

items	Parameter	Model selection for electrolytic cell
		GDL-D-24	GDB-D-22F	GDB-D-22
1	Thickness(um)@50KPa	240±20	220±20	220±20
	Thickness(um)@1Mpa	210±15	180±15	180±15
2	Resistance(mΩ•cm²)@1Mpa	≤9	≤9	≤9
3	surface density (g/m²)	100±5	85±5	85±5
4	Tensile strength MD(MPa)	≥9	≥9	≥9
	Tensile strength TD(MPa)	≥6	≥6	≥6
5	Air flux(m³/(m²h) @0.1bar	≥800	≥800	≥800
7	Contact angle(MPL side)MPL	≥140°	/	/
	Contact angle(Carbon paper side)	≥120°	≥120°	≤90°
8	Stiffness MD	≥11	≥11	≥11
	Stiffness TD	≥6	≥6	≥6

Apply to Proton exchange membrane (PEM) electrolytic water hydrogen production equipment.

GDL Selection Table for Air-cooled hydrogen fuel cell

items	Parameter	Model selection for aerospace&power station
		GDL-F-20	GDL-F-22
1	Thickness(um)@50KPa	200±20	220±20
	Thickness(um)@1Mpa	150±15	165±15
2	Resistance(mΩ•cm²)@1Mpa	≤8.5	≤9
3	surface density (g/m²)	60±5	65±5
4	Tensile strength MD(MPa)	≥8	≥8
	Tensile strength TD(MPa)	≥5	≥5
5	Gas permeability(m³/(m²h)@0.1bar	≥900	≥900
7	Contact angle(MPL side)(MPL)	≥140°	≥140°
	Contact angle(Carbon paper side)	≥120°	≥120°
8	Stiffness MD	≥10	≥10
	Stiffness TD	≥5	≥5

Apply to :
Hydrogen unmanned aerial vehicles;Hydrogen bicycle;Portable Power.

City Cluster	GDL Annual Output	GDL Width
Shenzhen	One hundred thousand square meters	400mm
Tianjin	One million square meters	The maximum width can reach 1.2m,depending on the needs of our customers.

Features

Strong conductivity
Strong water management ability
Excellent air permeability
High mechanical strength
Long durability
Smooth Surface

GDL for fuel cell's Performance measured in mass production batches:0.655 V@2000 mA/cm2