Ultrasonic Coating And Transfer Coating

Compared with Ultrasonic spray coating system and transfer coating system

As one of the new energy sources with great development prospects around the world, PEMFC is known for its high conversion efficiency and low pollution. Protons exchange membrane fuel cell construction: MEA (PEM, catalyst and GDL) and bipolar plate. Proton exchange membrane is one of the most critical components of PEMFC, which directly affects the performance and life of the battery.

The MEA is the place of electrochemical reaction and the core of the stack. Its performance directly determines the performance of the fuel cell. The MEA consists of a proton exchange membrane and an anode and cathode catalytic layer. The MEA can be divided into two modes: GDE and CCM according to the initial spraying of the catalyst carrier. In the GDE mode, the catalyst is sprayed on the gas diffusion layer, and then the proton exchange membrane in the middle is clamped by heat and pressure. The CCM mode is to spray the catalyst directly on the proton exchange membrane, and then cover it with a gas diffusion layer. Among them, the high utilization rate of CCM mode materials has become an industry trend. CCM mode can be further divided into transfer method, ultrasonic spray method and roll-to-roll slit extrusion method. At present, the first-generation double-sided transfer CCM process and the second-generation cathode direct coating anode transfer process continue to be used.At present, the first-generation double-sided transfer CCM process and the second-generation cathode direct coating anode transfer process continue to be used.

Ultrasonic coating technology creates highly uniform, repeatable and durable membrane. It operates through continues vibration from the nozzle to break up the agglomerated particles into evenly dispersed functional particles, maximizing surface area exposure of the catalyst to create higher electrochemical performance of coatings. And when using the ultrasonic spray coating technology apply catalyst coating to the membranes by adjusting the spray parameters (height, flow rate and frequency of the nozzle) to control the rate of water added, because it needs to keep the thin membrane moist and not deformed.

Ultrasonic Coating And Transfer Coating - Cheersonic

Cheersonic has committed to the research and development of various ultrasonic equipment for more than ten years. CENG-S, CENG-M and CENG-L developed by our company is basic, programmable micro material spray coating system. Various types of catalysts suspensions including the carbon black ink, PTFE binder, ceramic slurry, platinum and other precious metal can be sprayed by using this bench-top ultrasonic spraying system capable of programming and controlling x, y, z three-axis coordinated operation are deposited onto PEM fuel cells, GDL, electrodes, electrolyte membranes and SOFC to create maximum load and high cell efficiency. Precise and controllable liquid supply system compared with different types of customized nozzles, significant reduction in materials usage and producing the highly uniform durable, repeatable and durable coatings from R & D to medium-sized batch production. The body is small and easy to place, the spraying performance is stable, and the operation is convenient.