Figure 1.

Schematic of the process to modify carbon cloth GDL via sewing hydrophilic and temperature- and humidity-sensing threads. (a) Polyester threads sewed on the carbon cloth GDL generating hydrophilic pathways for water removal. (b) Proposed roll-to-roll process of dip-coating cotton threads to confer humidity and temperature sensitivity. (c) FEP for temperature sensing and PDMS coating for humidity sensing. (d) Sewing of thread-based sensors for wireless monitoring of temperature and humidity.