Coating Technology for Hydrogen Generation by Proton Exchange Membrane Electrolysis of Electrolyzer
In recent years, as a new generation of clean energy, the hydrogen energy industry is developing rapidly and plays an important role in solving global environment issue. One of the main sources of hydrogen is electrolysis of water, and electrolyzer has also become an important hardware for hydrogen energy storage. Siansonic ultrasonic coating systems are ideal for spraying carbon based catalyst slurry onto electrolyte membranes for hydrogen generation. Ultrasonic coating system of proton exchange membrane electrolyzers can be equipped with automatic loading and unloading and turnover systems for double-sided coating, and different catalyst formulations can be applied to each side of the membrane. The durability and repeatability of the coating have been proved to be superior to other coating methods, thus extending the lifetime of PEM coating.
Siansonic has plentiful experience in coatings of PEM electrolier such as Nafion, can precisely control the properties of catalyst coating, and create more uniform and effective thin film coatings of electrolyzers for hydrogen generation industry.
Ultrasonic nozzle benefits for spraying carbon based catalyst suspensions:
As high as 90% catalyst utilization proven in MEA fabrication.
Porous coatings are quite durable, preventing cracking or peeling of catalyst layer.
Up to 50% reduction in raw material consumption with reduced overspray and splashing
Precise spray patterns are easily shaped for a variety of applications.
Highly controllable spray provides greater repeatability.
Non-clogging ultrasonic spray nozzle
Ultra-low flow rate capabilities, intermittent or continuous.
Ultrasonic vibrations continuously disperse the particles to avoid agglomerating.
Very small minimum liquid volume required for coating of PEMs (only 5ml of catalyst suspensions required to coat multiple PEMs). Optimal for R&D scale.
Excellent adhesion of catalyst coatings; ideal for electrolysis applications and high vibration fuel cell applications such as automotive parts.
Siansonic ultrasonic nozzles prevent the particles in suspensions from agglomerating due to continuous ultra-sonication energy in the nozzle. Catalyst particles with well dispersed by using ultrasonic spray technology results in better electrochemical performance as well as higher repeatability of functional layers.