Developing Ion-selective Membrane Electrodes

Developing Ion-selective Membrane Electrodes – Thin Film Coating Technology – Cheersonic

The construction of solid membrane ISEs is based on the insertion of electroactive material (ion pair complex), or only of a counter ion into a polyvinyl chloride (PVC) matrix. The PVC type as well as the plasticizer used for the membrane construction affect the reliability of the electrode’s response. The construction of the solid membrane is not reproducible because the electroactive material is not uniformly distributed in the membrane. On the other hand, the impregnation process in liquid membrane construction causes the electroactive material to be uniformly distributed in the graphite rod surface because of the uniformity of distribution of the pores in the graphite. For a solid membrane, smaller quantities of electroactive materials, plasticizers, and solvent (usually tetrahydrofuran) are used in a large quantity of PVC. Homogenization between them is not easy to achieve.

Cheersonic’s ultrasonic equipment is suitable for spraying catalyst solutions containing carbon black ink suspension, platinum slurry and other precious metal solutions. From R&D to production, our non-clogging technology results in greater control of coating attributes, significant reduction in materials usage, and reduced maintenance and downtime. It can prepare fuel cell proton exchange membrane with excellent performance. It integrates multiple systems such as ultrasonic, dispersion, carrier gas, liquid, heating station, vacuum adsorption, and exhaust emission control.

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

1.Excellent stiction “adherence” to PEM; optimal for high vibration fuel cell applications such as automotive parts.
2.Low diversion pressure can reduce waste of overcoating and air pollution
3.Intermittent or continuous operation
4.High transfer efficiency.
5.No blockage
6.Utilization> 95%
7.Corrosion resistant stainless steel and titanium construction

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