Figure 7.

Schematic diagram of components for a single cell of an AEMWE. In this schematic, IrO₂-based catalysts and a porous titanium transport layer (PTL) are used at the anode. (The titanium PTL is referred to as GDL in the schematic.) At the cathode (right-hand side), carbon-supported Pt (Pt/C) catalysts and a porous carbon GDL are used. H₂O, OH^–, and gas (H₂ and O₂) molecule flow are also indicated in the figure. Depending on the AEMWE, other catalyst compositions, e.g., Ni- and Fe-based anode catalysts, are often used. Reprinted with permission from ref (107). Copyright 2019 Elsevier.