Gas diffusion layers
Gas diffusion layers (GDLs) perform the significant functions in the proton exchange membrane fuel cells (PEMFCs), such as maintaining the water balance in the membrane electrode assem-bly (MEA) by allowing appropriate amount of water to move in and out from the reaction zone, providing the mechanical sup-port for the MEA and electrical contact between the electrodes and the current collectors. The key characteristics of GDLs include structural design, porosity, hydrophobicity, hydrophilicity, gas permeability/transport properties, watermanagement and surface morphology. The GDLs consist of a micro-porous layer made of teflonized carbon black on the top of macro-porous carbon paperor cloth substrate. The effects of macro-porous carbon substrateon the GDL performance have been reported in our previous study. Alcohol based solvents are widely used for preparing homoge-nous dispersion of teflonized carbon slurries for GDL fabricationof micro-porous layers. However, the alcohols pose environmental and health safety issues when used in large rvolume for any commercial manufacturing.
Fuel Cell
Ultrasonic spray fuel cell catalyst coating system can produce highly uniform, repeatable and durable coatings. Our ultrasonic spraying can well control coating properties, significantly reduce material usage, and reduce maintenance and downtime.
About Cheersonic
Cheersonic is the leading developer and manufacturer of ultrasonic coating systems for applying precise, thin film coatings to protect, strengthen or smooth surfaces on parts and components for the microelectronics/electronics, alternative energy, medical and industrial markets, including specialized glass applications in construction and automotive.
Our coating solutions are environmentally-friendly, efficient and highly reliable, and enable dramatic reductions in overspray, savings in raw material, water and energy usage and provide improved process repeatability, transfer efficiency, high uniformity and reduced emissions.
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