Electrochemical impedance spectra of solid-oxide fuel cells and polymer membrane fuel cells

The effect of methanol and ethanol cross-over on the performance of PtRu/C-based anode DAFCs

“…Cyclic voltammetry was carried out by using a DHE serving both as the counter electrode and as the reference electrode, in which the over-potential of the counter electrode was considered negligible [22]. Fig.…”

Determination of ionic resistance and optimal composition in the anodic catalyst layers of DMFC using AC impedance

“…The cathode was fed on hydrogen, which served as the dynamic hydrogen electrode (DHE), and the overpotential of the DHE is negligible according to the previous work [16]. These anode polarization data provide a direct tool for comparing the activities of these anode catalyst layers.…”

Impedance Spectrometer Modelling in Matlab/Simulink for Measuring the Complex Impedance of a Fuel Cell –EIS Method

“…To measure the impedance, a load bank and a frequency response analyzer (FRA) connected to each other with the fuel cell is needed [5]. The FRA generates the sinusoidal signal which then being superimposed on the DC signal generated by the load bank and fed back to the FRA to measure the impedance [6], [7]. There are two modes of measuring the impedance [4], either in a potentiostatic mode or galvanostatic mode.…”

“…This technique is powerful and can provide a lot of informa tion in a short period of time. It has been applied to proton exchange membrane fuel cell in a number of recent studies [7]. The small excitation waveform at this amplitude causes only very small perturbations on the fuel cell system and reduces errors due to measurement techniques.…”