โ Scribed by Israr Ul-Haque; David L Trimm
No coin nor oath required. For personal study only.
A sensor to detect gases and vapors, particularly carbon monoxide and water vapor, at relatively low concentrations includes a substrate having a layer on a face of the substrate. The layer comprises a semi conductor metallic oxide (such as stannic oxide), a catalyst (such as platinum black), and a rheological agent (such as kieselguhr or sepiolite). The rheological agent induces porosity into the surface of the layer. The rheological agent affects the mixing and processing of the layer, and aids binding, resulting in a sensor with greater sensitivity and faster response.
๐ SIMILAR VOLUMES
Thin-film electrocatalyst layers with varying PTFE and Nafion contents for unitized regenerative PEM fuel cells (URFCs) made using the paste method were examined as URFC electrodes. Adding Ir catalyst to the oxygen electrode layer significantly improved performance. Catalyst loadings can be reduced