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Carbon Paper Gas Diffusion Layer Carbon Paper Gas Diffusion Layer
Carbon Paper Gas Diffusion Layer Carbon Paper Gas Diffusion Layer
Carbon Paper Gas Diffusion Layer Carbon Paper Gas Diffusion Layer

Carbon Paper Gas Diffusion Layer

Availability:
• Create gas diffused pathway from flow channels to the catalyst layer
• Remove by-produced water outside of the catalyst layer preventing flooding in the same time
• Keep water on surface for conductivity 
• Heat transfer during cell operation
• Provide enough mechanical strength to hold the MEA
Product Description


Gas Diffusion Layers (GDL) are key components many types of fuel cells, such as

Proton Exchange Membrane (PEMFC ), 

Direct Methanol (DMFC) 

Phosphoric Acid (PAFC)


They are also important to other electrochemical devices such as electrolyzers. 


In fuel cells, this thin, porous sheet will provide high electrical and thermal conductivity and chemical / corrosion resistance, and then they will the proper flow of reactant gases (hydrogen and air) and manage the water transport out of the MEA. 


The GDL serves as a connection bridge between the MEA and Graphite Plate


With MPL coating to minimize the contact resistance between the GDL and catalyst layer, it will better limit the loss of catalyst to the GDL interior and help to improve water management as it provides effective water transport. 


MPL treatment is especially recommended for use with CCM (Catalyst Coated Membrane).



Code

SKU

HW-TZ-190


1

Material Type

Carbon paper

Unit


2

Thickness

190±0.02

um


3

Surface roughness

8

um


4

Bulk density

0.44

g/cm³


5

Gas permeability

1900

ml.mm/(2.hr.mmAq)


6

Porosity

78

%


7

Flexural modulus

10

Gpa


8

Bending strength

40

MPa


9

Tensile strength

50

MPa


10

Contact resistivity

80

mΩ.cm


11

In-plane resistivity

5.8

mΩ.cm


12

Through-plane thermal conductivity (25℃)

1.7

w/mk


13

In-plane thermal conductivity (25℃)

21

w/mk


14

In-plane thermal conductivity (100℃

23

w/mk


15

Plane thermal expansion coefficient

-0.8



16

Compressibility (at 5 psi, 1.0MPa)

24

%


17

Water contact angle (MPL side)

>130

°


18

PTFE processing capacity

5-20

wt%


19

MPL coating loading

1

mg/cm²


20

Impurity content (iron, cobalt, nickel)

<10

PPM



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