Results 71 to 80 of about 3,247 (230)
Energies, 2019 Flow field plays an important role in the performance of proton exchange membrane (PEM) fuel cells, such as transporting reactants and removing water products.
Xuyang Zhang +3 more
doaj +1 more source
Heat Transfer, EarlyView.ABSTRACT Traditional numerical methods, such as finite difference methods (FDM), finite element methods (FEM), and spectral methods, often face meshing challenges and high computational cost for solving nonlinear coupled differential equations. Machine learning techniques, specifically Physics‐informed machine learning, address these obstacles by ...
Ahmad, Feroz Soomro, Husna Zafar
wiley +1 more source
Polymer Composites, EarlyView.Schematic of the experimental workflow for evaluating the effect of different graphite fillers on the electrical, thermal, mechanical, and gas‐barrier properties of ultrathin composite foils produced via the Powder‐to‐Roll process. ABSTRACT This study systematically investigates the influence of graphite type, particle shape, and particle size on the ...
Laura Huwald +5 more
wiley +1 more source
Small, EarlyView.This paper presents the first multiscale identical location tomography of a porous transport electrode for PEM water electrolysis. Different tomography and modeling approaches determine the relevant structural properties ranging from micrometer‐thick fibers to nanometer‐thin binder films covering the catalyst particles.
Markus Bierling +8 more
wiley +1 more source
Large‐Scale Hydrogen Storage: Surface and Subsurface Challenges
ChemBioEng Reviews, Volume 13, Issue 2, April 2026.This review examines underground hydrogen storage with emphasis on the interaction between surface facilities and subsurface reservoirs. Variable renewable hydrogen requires compression, buffering, and purification before injection, while subsurface processes influence wellhead pressure, temperature, and composition.
Mostafa Montazeri +3 more
wiley +1 more source
Steady-State Modeling of Fuel Cells Based on Atom Search Optimizer
Energies, 2019 In simulation studies, the precision of fuel cell models has a vital role in the quality of results. Unfortunately, due to the shortage of manufacturer data given in the datasheets, several unknown parameters should be defined to establish the fuel cell ...
Ahmed M. Agwa +2 more
doaj +1 more source
ChemElectroChem, Volume 13, Issue 7, 1 April 2026.Beyond Pure CO2: Sn–Zn/C and Sn–Cu/C show comparable formic acid production under pure CO2 (40.81% vs. 29.17% FE), but only Sn–Zn/C maintains activity under realistic 50% CO2 dilution (42.7% retention) while Sn–Cu/C fails completely. Multimodal characterization reveals that thermodynamic oxide phase compatibility and textural stability are critical ...
Mitra Eviani +4 more
wiley +1 more source
Spatially Resolved Current Density and Electrochemical Impedance Spectroscopy in PEM Fuel Cells
Fuel Cells, Volume 26, Issue 2, April 2026.ABSTRACT The durability and efficiency of proton exchange membrane fuel cells (PEMFC) are crucial for their deployment in heavy‐duty applications. The membrane‐electrode assembly (MEA) of a PEMFC plays a central role and can be characterized using in situ methods like polarization curves, current density mapping, and electrochemical impedance ...
Eva Fensterle +5 more
wiley +1 more source
Polish Maritime Research, 2016 The paper presents results of the research project whose the main goal was to build a technology demonstrator of an electric supply system based on the PEM fuel cell.
Grzeczka G., Szymak P.
doaj +1 more source
Fuel Cells, Volume 26, Issue 2, April 2026.ABSTRACT Prognostics and health management are crucial for the reliability and lifetime assessment of polymer electrolyte fuel cells (PEFCs). Here, we review the current advances on this topic, focusing mainly on key degradation mechanisms and methodologies such as physics‐aware, data‐driven, and hybrid modeling approaches.
Farideh Abdollahi +5 more
wiley +1 more source