Effect of rheology controller agent addition to Micro-Porous Layers on PEMFC performances

► Carboxymethylcellulose as rheology controller agent in inks formulation for MPLs in PEMFCs GDLs. ► Carboxymethylcellulose improves rheological features of the inks. ► CMC-based MPLs reduce FCs ohmic resistance. ► CMC-based MPLs improve FC electrochemical performance at high temperature and low humidity.