Insights into Interfacial and Bulk Transport Phenomena Affecting Proton Exchange Membrane Water Electrolyzer Performance at Ultra‐Low Iridium Loadings

• Published in: Advanced science Vol. 8; no. 21; pp. e2102950 - n/a
• Main Authors: Peng, Xiong, Satjaritanun, Pongsarun, Taie, Zachary, Wiles, Luke, Keane, Alex, Capuano, Christopher, Zenyuk, Iryna V., Danilovic, Nemanja
• Format: Journal Article
• Language: English
• Published: Weinheim John Wiley & Sons, Inc 01.11.2021; Wiley; John Wiley and Sons Inc
• Subjects: Capital costs; Electricity; Electrodes; electrolysis; ENERGY STORAGE; Hydrogen; iridium; Kinetics; PEMWE; porous transport layer; Titanium; ultra‐low loading; X‐ray computed tomography

Interfacial and bulk properties between the catalyst layer and the porous transport layer (PTL) restrict the iridium loading reduction for proton exchange membrane water electrolyzers (PEMWEs), by limiting their mass and charge transport. Using titanium fiber PTLs of varying thickness and porosity,...