TY - JOUR U1 - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed) A1 - Shirsath, Anantrao Vijay A1 - Raël, Stéphane A1 - Bonnet, Caroline A1 - Schiffer, Lutz A1 - Bessler, Wolfgang G. A1 - Lapicque, François T1 - Electrochemical pressure impedance spectroscopy for investigation of mass transfer in polymer electrolyte membrane fuel cells JF - Current Opinion in Electrochemistry N2 - Mass transfer phenomena in membrane fuel cells are complex and diversified because of the presence of complex transport pathways including porous media of very different pore sizes and possible formation of liquid water. Electrochemical impedance spectroscopy, although allowing valuable information on ohmic phenomena, charge transfer and mass transfer phenomena, may nevertheless appear insufficient below 1 Hz. Use of another variable, that is, back pressure, as an excitation variable for electrochemical pressure impedance spectroscopy is shown here a promising tool for investigations and diagnosis of fuel cells. Y1 - 2020 SN - 2451-9103 SS - 2451-9103 U6 - https://doi.org/10.1016/j.coelec.2020.04.017 DO - https://doi.org/10.1016/j.coelec.2020.04.017 VL - 20 SP - 82 EP - 87 PB - Elsevier Limited CY - Amsterdam ER -