... measurement Maxwell equations tomography fuel cell DMFC PEFC MEA tomography current density distribution magnetic field measurement Fuel cells have been known for a long time ( 1 2 3 4 ). Their principal advantage is the direct conversion of chemical into electric energy thus avoiding...

..., 3.8,6.3 1.3, 3.8, 6.3 9.5, 28.5, 47.5 19.0, 57.0,95.0 Hydrogen utilization ratio(%) 2.5, 7.6,12.6 7.6, 22.8, 38.0 19.0, 57.0, 95.0 19.0, 57.0,95.0 Current density distributions calculated by the numerical model are plotted in Figs. 12 13 14 15 16 17 . Graph (a) shows the calculated...

... conditions which maximize the fuel cell performance while maintaining a level of uniformity in the current density distribution. A comprehensive two-dimensional model is adopted to simulate the species transport and electrochemical phenomena in a PEM fuel cell. Numerical simulations are performed for over...

... MCFC mathematical modeling conversions temperature distribution current density distribution MCFC (molten carbonate fuel cell) is working at a relatively high temperature ( 650 ° C ) with a high efficiency. It has an advantage of using natural gas as fuel. A stack of unit cells...

...P. C. Ghosh; T. Wüster; H. Dohle; N. Kimiaie; J. Mergel; D. Stolten A new in situ measurement method of mapping the current density distribution in polymer electrolyte fuel cells (PEFC) is used to analyze the performance of a fuel cell under different operating conditions. The present method...