Anion-exchange Membranes Fuel Cell Coating

Anion-exchange Membranes Fuel Cell Coating – Coating Systems – Cheersonic

Alkaline anion-exchange membranes (AAEMs) are being developed for application in electrochemical devices such as alkaline polymer electrolyte fuel cells (APEFC). As with the more well known proton-exchange membrane fuel cells (PEMFCs), APEFCs can be operated with Pt-based catalysts. However, it should be noted that even though the oxygen reduction reaction is slightly less of a problem at high PH, the hydrogen oxidation reaction kinetics is poorer with Pt catalysts in alkali than in acid. In contrast to PEMFCs, the anode of APEFCs tends to produce larger performance limitations than the cathode. The main rationale for the development of devices such as APEFCs is the promise of the ability to use a broad range of non-precious metal (non-Pt-group-metals) catalysts.

Cheersonic’ s fuel cell catalyst coating systems are uniquely suited for these challenging applications by creating highly uniform, repeatable, and durable coatings. Using the company’s patented ultrasonic spray head technology, it can spray uniformly and efficiently on proton exchange membranes and gas diffusion layers. Uniform catalyst coatings are deposited onto PEM fuel cells, GDLs, electrodes, various electrolyte membranes, and solid oxide fuel cells with suspensions containing carbon black inks, PTFE binder, ceramic slurries, platinum and other precious metals.

The advantages of Cheersonic’ s fuel cell catalyst coating systems include：

1.Very high Platinum utilization proven in MEA fabrication; as high as 90%.
2.Non-clogging
3.Low-flow spray reduces spillage and air pollution.
4.Continuous or intermittent operation possible
5.Highly porous coatings are extremely durable, preventing cracking or peeling of catalyst layer.
6.No moving parts to wear out
7.Minimal maintenance and downtime.
8.Robust design and materials resist corrosion.
9.Ultrasonic energy disperses the agglomerated particles, producing a homogeneous coating.

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