GDL Catalyst Coating

GDL Catalyst Coating – Spray Coating Application – Cheersonic

The Gas Diffusion Layer (GDL) is a very important supporting material in a Membrane Electrode Assembly (MEA). Gas diffusion layers are a porous material composed of a dense array of carbon fibers, which also provides an electrically conductive pathway for current collection. GDL plays an important role of electronic connection between the bipolar plate with channel-land structure and the electrode. In addition, the GDL also performs the following essential functions: passage for reactant transport and heat/water removal, mechanical support to the membrane electrode assembly (MEA), and protection of the catalyst layer from corrosion or erosion caused by flows or other factors. The two types of gas diffusion layers most commonly used are carbon paper and carbon cloth. Both are carbon fiber based porous materials: carbon paper is non-woven, while carbon cloth is woven fabric, thus no binder is needed.

Cheersonic’ s line of XYZ motion ultrasonic coating systems offer unique options that enable us to customize these machines based on customers’ process requirements. They are ideal for Solar and Fuel Cell manufacturing as well as research and development coatings in different environments, from fully inert to high temperature needs or rotational Z-axis for rod-shaped substrates. Due to the characteristics of controllable film thickness and high uniformity, the durability and conductivity of the film electrode can be greatly improved.

The advantages of Cheersonic ultrasonic coating systems include：

1.Ultra-low flow rate capabilities, intermittent or continuous.
2.Highly controllable spray that produces reliable, consistent results.
3.Ultrasonic vibrations continuously break up agglomerated particles and keep them evenly dispersed; maximizing platinum utilization.
4.Corrosion-resistant titanium and stainless steel construction
5.The self-cleaning function of the ultrasonic nozzle prevents clogging.
6.The platform takes up less space.
7.80% reduction in paint consumption
8.The particle diameter is optional which can more flexibly affect the through-hole property of the coating

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