Hydrogen Fuel Cell - How to diffuse in Gas Diffusion Layer GDL?

Diffusion in gas diffusion layer GDL -- Hydrogen fuel cell -- YMUS Ultrasonic spraying

Gas diffusion layer (GDL) is a very important component of proton exchange membrane fuel cells, located between the catalyst electrode (CL) and the bipolar plate (BP). It itself does not participate in electrochemical reactions like the CL layer, but it is a very important guarantee for the normal operation of fuel cells.

The function of GDL first provides a path for the hydrogen-oxygen reaction gas to reach CL; The second is to provide an outlet for the generated water; The third function is to make CL and BP realize electrical connection; The fourth function is to help dissipate some of the heat; The fifth function is mechanical support MEA.

Note:Fuel cell membrane electrode

GDL is mainly used for the transport of reaction gases, reaction products and electrons. Considering the nature of GDL, we should proceed from these three aspects. The properties of GDL can be characterized in terms of polarization curves, as well as physical means such as the transmission characteristics, electrical conductivity, pore structure and hydrophilic or hydrophobic properties of some fluids.

YMUS Ultrasonic Spray Coatings on fuel cell catalysts for a highly uniform, repeatable and durable coating. YMUS ultrasonic atomizing nozzle's anti-clog technology enables precise control of solution discharge to better control coating thickness, material utilization > 95%, and reduced maintenance and down time.

YMUS ultrasonic spraying can also be coated with other metal alloys, necks containing metal oxide suspensions, nickel, iridium and ruthenium carbon-based fuel cell catalyst coatings to manufacture fuel cell PEM, electrolytic cell and solid oxide fuel cell SOFC, etc.

YMUS-ZM200 Ultrasonic spraying system

Equipment characteristics

◆ Ultrasonic spraying equipment, using ultrasonic nozzle technology, can provide uniform and efficient film spraying;

◆ High precision of coating thickness control: tens of nanometers to tens of microns of coating can be prepared, accurate control of coating thickness;

◆ Spraying uniformity: >95%;

◆ Solution conversion rate: ≥95%, 4 times the traditional two fluid spraying;

◆XYZ three-axis servo motion system;

◆ Full color touch screen control and friendly man-machine interaction interface;

◆ High precision laboratory injection pump;

◆ Wide range of liquid flow: 0.001ml/ min-50ml /min; (Depending on the type of solvent and sprinkler)

◆ Imported high-precision pressure-reducing valve and liquid valve, to achieve high-speed and stable gas-liquid coordination;

◆ Laser alignment: to assist users to easily and quickly locate the nozzle position;

◆ Built-in exhaust gas system, does not block the nozzle technology, reduce maintenance costs;

◆ Microporous vacuum heating, suitable for battery diaphragm and other flexible substrates; (extensible)

◆ Maximum 500°C high temperature platform, suitable for spray pyrolysis film preparation; (extensible)