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The kinetics of O 2 and H 2 reactions with the active mass of the plates have been investigated by carrying out open-circuit and overcharge tests on cells and plates coming from commercial valve-regulated lead/acid batteries of different producers. The tests at open circuit showed that the rate of O 2 reduction at the negative plates is about four orders of magnitude higher...
This work deals with a new arrangement of a polymer electrolyte membrane fuel cell (PEMFC) support which allows the operation of a 100 cm 2 surface area fuel cell with cold and unhumidified gases. Hydrogen is not recycled. Both gases (pure hydrogen and oxygen) are heated and humidified internally, each one crossing a porous carbon block. This allows a simplified water management. Classical...
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