From the technological perspective, batch fabrication of the previously reported devices that
incorporated these electrocatalysts is a serial one-at-a-time process that includes several steps and makes it more difficult to implement.
Here, the toluene dispersion used for the development of the composite material could be cast by different deposition techniques on different substrates.
Then, many sensor devices could be prepared simultaneously, and therefore, the process can be scaled up for mass production. Up to now, the composite material was manually processed on the surface of thin-film metal electrodes, which are just used as conductive substrates to facilitate the composite wiring.
However, a parallel process of the composite material could be carried out by printing techniques, such as screen-printing or inkjet printing onto nonconductive substrates, which included electrical tracks and connection pads previously defined with other conductive materials.
Working in this way, the sensor fabrication process would be simpler, more cost-effective, and easily scalable for mass-production.