Analysis of electrochemical impedance spectroscopy in proton exchange membrane fuel cells

Abstract

SUMMARYA literature review of electrochemical impedance spectroscopy (EIS) analysis of proton exchange membrane fuel cells (PEMFCs) is presented. Emphasis is placed on the papers that analyse the impedance response of the cathode and anode half-cells of the PEMFCs based on a continuum-mechanics approach. The other type of analysis, which is based on the equivalent-circuits approach, is addressed for comparison. The relative advantages and disadvantages of the two approaches are discussed. Papers dealing with continuum-mechanics-based EIS modelling of general electrochemical systems are briefly reviewed.

Assessment of the Effects of Flow Rate and Ionic Strength on the Performance of an Air-Cathode Microbial Fuel Cell Using Electrochemical Impedance Spectroscopy

“…Equivalent circuit modeling (ECM) was utilized to further explore the EIS results, specifically to determine the distribution of resistive and capacitive features in the operating MFC. Gomadam and Weidner [7] and He and Mansfeld [8] provide a description of the ECM technique for fuel cell EIS studies. The Simplex method was employed for fitting to allow delineation of the internal resistances and capacitances.…”

“…Gomadam and Widner [7] have provided a summary of EIS techniques, including modeling approaches. He and Mansfeld [8] have described EIS analysis specifically for MFCs and how it can be used to understand the effects of various MFC parameters.…”

Synthesis and Characterization of H3PO4Doped Poly(benzimidazole-co-benzoxazole) Membranes for High Temperature Polymer Electrolyte Fuel Cells

“…porous structures. 25 In this study, even though catalyst layers for each membrane were fabricated from a single batch, it seems that the amounts of impregnated phosphoric acid in catalyst layer were varied according to membrane properties, influencing the cell performances. Therefore, higher cell performances were obtained for MEAs with lower polarization resistances: PBI < PBI-co-PBO2 < PBI-co-PBO1, while the ohmic loss was similar for each MEA and the mass transport effect was negligible.…”

PEMFC for aeronautic applications: A review on the durability aspects

“…EIS data is presented as a Nyquist plot with equivalent circuit models (ECM) to ease interpretation and estimate electrochemical parameters such as resistances, time constants and capacitance [90][91][92][93][94]. The electrochemical parameters are reflective of state of health of fuel cell and its components such as drying/flooding of ionomer membrane and catalyst layer.…”

“…Furthermore, double layer capacitance (C dl ) is directly proportional to ECSA when the supported catalyst is evenly distributed over MEA surface. Hence the catalyst layer can be represented by C dl and R ct [90,92].…”