摘要:
A fuel cell stack (2) constructed and assembled so that a membrane-type humidifying exchanger (1) enables diffusional contact of a re-circulating aqueous liquid fuel supply and the oxidant air stream supplied to the fuel cell stack (2) is provided. The assembly is configured so that the fuel cell stack (2) is mounted together with other ancillaries on a base provided by the membrane-type humidifying exchanger (1).
摘要:
Fuel cells equipped with a self-contained gas- or air-lift which circulates fuel through the channels of the separator plate of the fuel cell via gaseous carbon dioxide produced by the reaction of the membrane electrode assembly and the fuel are provided. Also provided are exemplary self-contained gas-or air-lifts useful for production of these fuel cells.
摘要:
Fuel cells equipped with a self-contained gas- or air-lift which circulates fuel through the channels of the separator plate of the fuel cell via gaseous carbon dioxide produced by the reaction of the membrane electrode assembly and the fuel are provided. Also provided are exemplary self-contained gas- or air-lifts useful for production of these fuel cells.
摘要:
Systems and methods for protecting fuel cell systems from frost by introduction of a freezing point depressant into the fuel cell system and/or flushing the fuel cell system with an insert gas are provided.
摘要:
Membrane Electrode Assemblies for Polymer Electrolyte Hydrogen and Direct Methanol Fuel Cells and Methods for Their Production Electrodes and membrane electrode assemblies for use in fuel cells are provided containing a plurality of layers of catalyst and binder, wherein the first layer (2a, 2b) adjacent to the PEM (1) of the plurality of layers (3a, 3b, 4a, 4b, 5a, 5b) contains a higher concentration of catalyst as compared to each subsequent layer of the electrode.
摘要:
Methods and systems for operation of direct methanol fuel cell (DFMC) systems with enhanced flexibility within a wide range of electrical loads as well as no external load are provided. With these methods and systems, the fuel cell operates at low power in a non shut-down state in a fully controlled manner thus allowing the fuel cell to withstand frost conditions and to maintain optimal ancillary battery capacity.
摘要:
Methods and systems for operation of direct methanol fuel cell (DFMC) systems with enhanced flexibility within a wide range of electrical loads as well as no external load are provided. With these methods and systems, the fuel cell operates at low power in a non shut-down state in a fully controlled manner thus allowing the fuel cell to withstand frost conditions and to maintain optimal ancillary battery capacity.