Patent ID: 9478819
Filing Date: 2016-10-25
CPC Classification: H01M,Y02E

Claim Text:
1. A high efficiency fuel cell system comprising: a topping fuel cell assembly comprising a plurality of topping fuel cells, a topping cathode portion, and a topping anode portion, wherein, in each of the plurality of topping fuel cells, the topping cathode portion and the topping anode portion are separated by an electrolyte; and a bottoming fuel cell assembly comprising one or more bottoming fuel cells, a bottoming cathode portion, and a bottoming anode portion, wherein in each of the one or more bottoming fuel cells, the bottoming cathode portion and the bottoming anode portion are separated by an electrolyte; wherein the bottoming anode portion is configured to receive anode exhaust output from the topping anode portion, and the topping cathode portion is configured to receive cathode exhaust from the bottoming cathode portion; and wherein a number of the plurality of topping fuel cells in the topping fuel cell assembly is greater than a number of the one or more bottoming fuel cells in the bottoming fuel cell assembly, such that the topping fuel cell assembly utilizes more fuel than the bottoming fuel cell assembly.