vet-china is committed to providing efficient fuel cell materials, especially proton exchange membrane (PEM) fuel cell membrane electrode assembly (MEA). This assembly is manufactured using innovative technology to ensure the excellent performance of fuel cell systems in a variety of application scenarios, from vehicle power to portable energy systems.
Specifications of membrane electrode assembly:
| Thickness | 50 μm. |
| Sizes | 5 cm2, 16 cm2, 25 cm2, 50 cm2 or 100 cm2 active surface areas. |
| Catalyst Loading | Anode = 0.5 mg Pt/cm2.Cathode = 0.5 mg Pt/cm2. |
| Membrane electrode assembly types | 3-layer, 5-layer, 7-layer (so before ordering, please clarify how many layers MEA you prefer, and also provide the MEA drawing). |
The main structure of fuel cell MEA:
a) Proton Exchange Membrane (PEM): a special polymer membrane in the center.
b) Catalyst Layers: on both sides of the membrane, usually composed of precious metal catalysts.
c) Gas Diffusion Layers (GDL): on the outer sides of the catalyst layers, typically made of fiber materials.
The function of fuel cell MEA:
- Separating reactants: prevents direct contact between hydrogen and oxygen.
- Conducting protons: allows protons (H+) to pass from the anode through the membrane to the cathode.
- Catalyzing reactions: Promotes hydrogen oxidation at the anode and oxygen reduction at the cathode.
- Generating current: produces electron flow through electrochemical reactions.
- Managing water: maintains proper water balance to ensure continuous reactions.
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