Polarization ID without ECM
A relaxation-time-distribution-based impedance spectroscopy analysis for PEM electrolyzers that identifies polarization contributions from water/gas diffusion, HER/OER, and proton transfer without requiring an equivalent circuit model.
Li, Yangyang · Yayang, Jiang · Dang, Jian · Deng, Xintao · Liu, Biao · Ma, Jugang · Yang, Fuyuan · Ouyang, Minggao · Shen, Xiaojun
Chemical Engineering Journal 2023
Three characteristic peaks represent the main polarization processes in the hydrogen production system
Optimal regularization parameter is 0.01 for different current and temperature