Effect of Gas Diffusion Layers of PEM Fuel Cells

Effect of Gas Diffusion Layers of PEM Fuel Cells – Fuel Cell Coating – Cheersonic

The efficiency and performance of proton exchange membrane fuel cells (PEMFCs) depends heavily on the heat and associated water imbalances because of their low operating temperature, which is typically less than 100℃. One of the parameters that directly affects both heat and water management of a PEMFC, as well as durability and longevity of its components, is the temperature distribution inside the membrane electrode assembly (MEA). This temperature distribution is highly dependent on the thermal conductivity of fuel cell components, especially gas diffusion layer (GDL). GDLs are usually treated with different loads of hydrophobic PTFE for the purpose of water management. However, the added PTFE can change the thermal resistance of GDLs and, hence, affects the fuel cell heat management as well.

Cheersonic ultrasonic coating systems suitable for R & D, small and medium-sized batch production. It produce highly durable, uniform, coatings of carbon-based catalyst inks onto both fuel cell and electrolysis processes for proton exchange membrane (PEM) electrolyzers such as Nafion, without deformation of the membrane. Cheersonic has developed coating processes that prvide excellent results with durable, pinhole-free coatings. And because the equipment has the advantage of extremely high liquid utilization, it can greatly reduce research and production costs.

The advantages of Cheersonic ultrasonic coating systems include：

1.Full range of ultrasonic nozzles
2.Spray patterns are easily shaped for precise coating applications
3.Up to 80% reduction in material consumption with reduced overspray, conserving expensive catalyst inks.
4.Spray plume can be easily shaped and directed to coat only target area.
5.Self-cleaning nozzle design prevents clogging
6.Extremely easy-to-control spray provides reliable and consistent results
7.Very uniform and durable coating (even on electrolyte substrates).