From what I understand about fuel cells, they generate power by influencing electrons to move themselves around an ion-conducting material to get to the other side. While the electrons make there way from one side to the other, they supply DC in the middle of there journey. But Im not quite sure why they are going to the other side. Exactly how far does the electron actually stray away from the protons on the other side to get to them (that's what they are going for right)? Why do they leave the positive side (anode) to get to the negative side (cathode)? I know that they are attracted to protons, but the protons are farther away from them than the anode is and they are on the cathode side which should be repeling them.