title: Engineered Water Highways in Fuel Cells: Radiation Grafting of Gas Diffusion Layers.
abstract: A novel method to produce gas diffusion layers with patterned wettability for fuel cells is presented. The local irradiation and subsequent grafting permits full design flexibility and wettability tuning, while modifying throughout the whole material thickness. These water highways have improved operando performance due to an optimized water management inside the cells.
authors.affiliation: Electrochemistry Laboratory, Paul Scherrer Institute (PSI), 5232, Villigen, Switzerland.
authors.forename: Antoni
authors.initials: A
authors.lastname: Forner-Cuenca
authors.affiliation: Electrochemistry Laboratory, Paul Scherrer Institute (PSI), 5232, Villigen, Switzerland.
authors.forename: Johannes
authors.initials: J
authors.lastname: Biesdorf
authors.affiliation: Electrochemistry Laboratory, Paul Scherrer Institute (PSI), 5232, Villigen, Switzerland.
authors.forename: Lorenz
authors.initials: L
authors.lastname: Gubler
authors.affiliation: Institute of Polymer Nanotechnology, University of Applied Sciences and Arts Northwestern Switzerland (FHNW), 5210, Windisch, Switzerland.
authors.forename: Per Magnus
authors.initials: PM
authors.lastname: Kristiansen
authors.affiliation: Electrochemistry Laboratory, Paul Scherrer Institute (PSI), 5232, Villigen, Switzerland.|Laboratory of Physical Chemistry, ETH Zurich, 8093, Zurich, Switzerland.
authors.forename: Thomas Justus
authors.initials: TJ
authors.lastname: Schmidt
authors.affiliation: Electrochemistry Laboratory, Paul Scherrer Institute (PSI), 5232, Villigen, Switzerland.|Neutron Imaging and Activation Group, Paul Scherrer Institut (PSI), 5232, Villigen, Switzerland.
authors.forename: Pierre
authors.initials: P
authors.lastname: Boillat
keywords: fuel cells; gas diffusion layer; patterned wettability; radiation grafting; water management