Abstract: A passive-delivery fuel cell system an anode with a fuel flow channel extending along the body and fluidly connecting the inlet to the outlet, wherein a volume of the flow channel per unit length of the anode body increases along the length of the body towards the second end, a capillary check valve in fluid communication with the anode inlet, a vented fuel cartridge in fluid communication with the anode outlet, and a pump in fluid communication with the vented fuel cartridge, the pump configured to pump fuel from the vented fuel cartridge to the inlet.

Abstract: A passive-delivery fuel cell system an anode with a fuel flow channel extending along the body and fluidly connecting the inlet to the outlet, wherein a volume of the flow channel per unit length of the anode body increases along the length of the body towards the second end, a capillary check valve in fluid communication with the anode inlet, a vented fuel cartridge in fluid communication with the anode outlet, and a pump in fluid communication with the vented fuel cartridge, the pump configured to pump fuel from the vented fuel cartridge to the inlet.

Abstract: A catalyst formulation for an organic fuel cell includes a noble metal and an admetal. The catalyst formulation can include a noble metal and an admetal in a heterogeneous mixture or a solid solution with up to about 90% degree of alloying. The admetal can encourage the oxidation of catalyst poisons at room temperature and therefore reduces the exhaustion of the fuel cell.

Abstract: A catalyst formulation for an organic fuel cell, for example a formic acid fuel cell, includes a metal oxide and a noble metal. The catalyst formulation can include a noble metal supported on a metal oxide. The metal oxide can store and release catalyst poisons at room temperature and therefore reduces the exhaustion of the fuel cell.