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The need of an efficient and well-characterized heterologous expression system of [FeFe]-hydrogenase for the production of O 2 -resistant mutants prompted us to explore the use of Escherichia coli as a possible expression system. O 2 -resistant hydrogenase mutants could be instrumental when coupling oxygenic photosynthesis with hydrogen bio-production. In general, expression of Desulfovibrio...
This paper proposes a static and dynamic model of polymer electrolyte membrane fuel cell, based on static-dynamic decomposition and voltage rebuilding. The static part is an implementation of an equivalent empirical function. The dynamic part is based on an equivalent electrical circuit. The parameters of the model are deduced from measurements of polarization curve and electrochemical impedance....
This paper proposes a static and dynamic model of a polymer electrolyte fuel cell based on empirical equation and equivalent electrical impedance modeling. Polarisation curve and electrochemical impedance spectroscopy provide static and dynamic model parameters. A study of parameter variation during life of the stack, leads to ageing phenomena and durability considerations.
This paper proposes a system oriented dynamic model of a polymer electrolyte fuel cell based on equivalent electrical impedances and on steady state response. Polarisation curve and electrochemical impedance spectra (EIS) provide information about respectively static and dynamic parameters of the model. The validation of the proposed model is based on experimental responses to a square pulsed current...
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