A fuel cell having a structure capable of certainly supplying a gas by making effective use of a limited space while ensuring the portability of the fuel cell is provided. The fuel cell includes two generators, a fuel supply portion, and two planar current collectors. Each of the generators has a proton...http://www.google.de/patents/US20030012999?utm_source=gb-gplus-sharePatent US20030012999 - Fuel cell, power supply method using fuel cell, function card, fuel supply mechanism for fuel cell, and generator and production thereof