| 摘要 |
Disclosed are reactant feed apparatus for liquid-fueled direct feed fuel cells, including miniaturized versions thereof. More specifically, disclosed is a fuel flow device for delivering liquid fuel to such direct feed fuel cells. The fuel flow device comprises a fuel flow-routing device and an enclosure/partition assembly containing the liquid fuel to be delivered. When the fuel flow device is fluidly connected to the fuel cell, it operates to deliver the liquid fuel to an anode flow field thereof by using the pressurized anodic exhaust gases exiting therefrom as the source of power for pumping the liquid fuel from the enclosure into the fuel cell. Also disclosed is a cathode flow field plate that utilizes an array of island members to provide multi-directional oxidant flow channels and expedite the passive delivery of oxidant to, and removal of product water from, a cathode flow field of a liquid-fueled direct feed fuel cell. Further, disclosed are methods for delivering liquid fuel and oxidant to the fuel cells using the above-disclosed devices.
|
