Operando Neutron Imaging of PEM Water Electrolyzer for Studying the Impact of the Mass Transport on the Cell Voltage at High-Load Operation
Increasing concerns about climate change and energy security have stimulated hydrogen economy development. Coupling proton exchange membrane water electrolyzers (PEMWE) with renewable energy sources has emerged as one appealing option to produce green hydrogen in order to decarbonize different economic sectors. However, when operated at high current densities PEMWE faces high voltage losses. A significant part of total voltage losses at high electrical loads is attributed to mass transport losses. These losses are usually considered to be caused by the two-phase flow in the anode porous transport layer (PTL). In this work, dynamic radiography and 3D tomography measurements of electrolyzers containing different PTLs will be performed to study the two-phase flow in PEMWE PTL. Simultaneous advanced electrochemical methods and operando neutron imaging measurement, with additional model-based analysis, will allow further understanding of two-phase mass transport in the PTL and its influence on the electrochemical performance.
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MILICIC Tamara; ALTAF Haashir; ARLT Tobias; Supriya Bhaskaran; CAKMAK Ece; FIEDLER Grant; HELFEN Lukas; Nikolay Kardjilov; SIVASANKARAN monisha; TENGATTINI Alessandro; VIDAKOVIC-KOCH Tanja; Nicole Vorhauer-Huget and ZIVKOVIC Luka. (2023). Operando Neutron Imaging of PEM Water Electrolyzer for Studying the Impact of the Mass Transport on the Cell Voltage at High-Load Operation. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.1-06-3
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