Anion Exchange Membrane
Anion exchange membrane is one of the core components of AEM, electrolyzer, which plays two main roles:
(1) Conducting OH− as an internal channel;
(2) Isolating hydrogen produced by the cathode and oxygen produced by the anode to avoid dangerous accidents.
AEMs play a vital role in the overall performance and durability of the electrolyzer. The microstructure of AEMs is usually composed of different cationic groups and polymer backbones, which give the membrane anion selectivity. Among them, the cationic groups are mostly quaternary ammonium, and the polymer backbone is usually polyarylene ether, polystyrene, polysulfone, polyethersulfone or polyoxyphenylene. Existing studies have shown that the main chain structure of the polymer mainly affects its mechanical and thermal stability, the cationic group mainly affects the ion exchange capacity, ion conductivity and transmission number, and the polymer backbone and cationic group jointly determine its chemical stability. Therefore, the overall structure of the polymer has a certain influence on the degradation mechanism and degradation rate of the membrane.
As the most advanced water electrolysis technology, the development history of AEM electrolysis is relatively short, and the research on high-performance AEMs is still in the early exploration stage. Compared with the mature proton exchange membrane, the ion conductivity and chemical stability of anion exchange membrane are lower than those of perfluorosulfonic acid membrane. In terms of conductivity, compared with proton exchange membrane, the ion conductivity of anion exchange membrane OH− is lower, about half of H+; in terms of stability, under alkaline conditions and at temperatures of 60 to 80 °C, the polymer backbone and organic cationic groups of AEMs are susceptible to OH− attack and chemical degradation, resulting in a sharp drop in the mechanical properties and ion conductivity of the membrane. Therefore, the relatively low ion conductivity and low durability of AEMs have always been the main obstacles to the large-scale promotion of AEM electrolysis.
Ultrasonic coating systems produce highly durable, uniform, coatings of carbon-based catalyst inks onto electrolysis processes for Anion exchange membrane (AEM) electrolyzers, without deformation of the membrane. Uniform catalyst coatings are deposited onto AEM, electrodes, various electrolyte membranes, and solid oxide fuel cells with suspensions containing carbon black inks, PTFE binder, ceramic slurries, platinum and other precious metals.
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.
Chinese Website: Cheersonic Provides Professional Coating Solutions
