Transport phenomena in polymer electrolyte membrane fuel cells via voltage loss breakdown

Method—Practices and Pitfalls in Voltage Breakdown Analysis of Electrochemical Energy-Conversion Systems

“…Many experimental fuel-cell studies assume that the kinetic losses occur solely in the cathode, thereby assuming negligible anode kinetic losses. [16][17][18][19][20] Later experimental studies sought to carry out a deeper analysis of voltage-loss contributions in the cell, as had been demonstrated in modeling studies. Williams et al 19 published a method that deconvolutes the polarization curve into six cathode voltage-loss sources.…”

“…Wood and Borup focused on separating the contributions of masstransport overpotential from the cathode catalyst layer and GDL. 18 Flick et al 17 reported the first measurement of anodic overpotentials by building upon the techniques introduced by Gasteiger et al 16 and Wood and Borup, 18 and using a third electrically insulated reference electrode.…”

Understanding flexural, mechanical and physico-chemical properties of gas diffusion layers for polymer membrane fuel cell and electrolyzer systems

“…Higher PTFE loadings results in a reduced porosity and an increase in the mass transfer overpotential. The literature study describes that the lower PTFE loadings result in poor mechanical properties and flooding of the GDL pores [17,52,77]. An optimal amount of PTFE is critical to fuel cell performance.…”

Recent Development and Applications in Electrodes for URFC

“…Flick et al [33] have developed a direct deposition of Pt catalyst onto the solid membrane using a thin-film catalyst layer impregnated with polypyrrole (ppy). Polypyrrole proved to improve the fabrication of the catalyst layer directly on to the surface of the Nafion…”