Hydrogen associated with Proton Exchange Membrane Fuel Cell (PEMFC) as the prime candidate energy is becoming attention in transportation. However, cost and service lifespan are main reasons that limit PEMFC wide application. In this paper, super-twisting sliding mode (STSM) controller designed for a four-phase interleaved boost converter (IBC) coupled PEMFC. The proposed can enhance robustness...

As a solution of high efficiency and clean energy, fuel cell technologies, especially proton exchange membrane fuel cell (PEMFC), have caught extensive attention. However, after decades of development, the performances of PEMFCs are far from achieving the target from the Department of Energy (DOE). Thus, further understanding of the degradation mechanism is needed to overcome this obstacle. Due...

The efficiency and durability of proton exchange membrane fuel cell (PEMFC) depend on precise control temperature. In practical applications, temperature variations due to dynamic loads can degrade performance thus reduce the duration cell. To solve problem, a composite method stack is presented in this study. First, model PEMFC thermal management system established, then feed-forward fuzzy PID...

This paper considers the effects of different types of faults on a model of a proton exchange membrane fuel cell (PEMFC). Using databases (which record the effects of the faults) and probabilistic methods (such as the Bayesian-Score and Markov Chain Monte Carlo), a graphical-probabilistic model for fault diagnosis is constructed. The graphical structure defines the cause-effect relationship amo...

in this paper the role of super paramagnetic iron oxide nanoparticles (spi) on platinum nanoclusters on activated carbon (pt/c) for electrocatalytic oxygen reduction reaction was considered. four composites of pt/c and super paramagnetic iron oxide nanoparticles were prepared with the same total composites weight and different loading of pt/c (1.2, 0.6, 0.4 and 0.3 mg ). the composite attached ...

The operating parameters have an important impact on the performance of a proton exchange membrane fuel cell (PEMFC). This paper investigates experimentally and numerically temperature relative humidity which significant influence PEMFC current density. These are adjusted simultaneously dynamically during operation. A 50 cm2 active area single-cell with serpentine flow channel was studied. In o...

to simulate a new economical architecture for pem fuel cell and investigate the effectiveness of the introduced structure on the performance, computational fluid dynamics (cfd) code is used to solve the equations for a single domain of the cell namely: the flow field, the mass conservation, the energy conservation, the species transport, and the electric/ionic fields under the assumptions of st...

Proton exchange membrane fuel cells (PEMFC) are a promising clean power source that can be used in variety of applications such as automobiles, stationary plants, and portable devices. The application problem PEM is multiscale process involving porous media, consisting series mass, momentum, energy transfers through gas channels, current electrode assemblies, electrochemical reactions at three-...

Sulfonated poly (ether ether ketone) (SPEEK) with a low degree of sulfonation (DS = 40%) was prepared for proton exchange membrane fuel cells (PEMFC). Poly (ether ether ketone) (PEEK) was sulfonated in concentrated H2SO4 under N2 atmosphere and characterized by the hydrogen nuclear magnetic resonance (H-NMR) technique. After preparation of the SPEEK polymer, the obtained polymer was dissolved i...