Distribution of Water Molecules inside Proton Exchange Membrane in Transient State during Fuel Cell Operation Monitored By Operando Time-Resolved CARS Spectroscopy

摘要

On the performance and stability of proton exchange membrane fuel cells (PEMFCs), the distribution of water inside the membrane during the power generation has a direct, profound influence, especially for the automotive applications. In this study, coherent anti-Stokes Raman scattering (CARS) spectroscopy was applied to investigating the distribution of water and its chemical states inside the membrane with high spatial (10 μm Φ (area) × 1 μm (depth)) and time (0.5 s) resolutions during the power generation.