Abstract: A fuel cell which comprises a metal anode immersed in a base electrolyte solution and connected with an electric circuit, a cathode comprising an acid solution, a carbon catalyst and electron distributor plate in that solution and connected with an electron supply and a wettable fluid impermeable membrane and disposed between the electrolyte and cathode solution and establishing an acid-base reactor interface where hydroxyl ions are generated for conduction through the electrolyte to the anode.

Abstract: A nitrogen-metal fuel cell comprising a cathode and an anode in spaced relationship, a first electrolyte solution contacting the cathode, a second electrolyte solution contacting the anode and an ion transfer membrane between the electrolytes to prevent commingling thereof and through which hydroxyl ions freely move. The cathode comprises an aqueous solution of nitrate and an ion transfer membrane between the solution and the electrolyte contacting the cathode.

Abstract: A metal/air fuel cell comprising an elongate case with a closed inner space, a flat flexible diaphragm and a flat cathode plate with axially disposed inner opposing surfaces and outer surfaces and arranged in the case to define a central electrolyte chamber therebetween and air chambers axially outward thereof, a flat anode plate in the electrolyte chamber, a first collector between the anode and cathode plates and a flat electric insulating fluid permeable insulator between the cathode plate and the collector and cooperating therewith to maintain the plates in predetermined spaced relationship, electrolyte supply means conducting electrolyte into and out of the electrolyte chamber and air supply means conducting air under pressure into the air chambers to feed air into the outer surface of the cathode plate and to urge the diaphragm axially toward the anode plate anode thereby urging plate collector, insulator and cathode plate into uniform pressure engagement with each other.

Abstract: A fuel-air cell comprising an anode of readily corrodable metal such as aluminum or magnesium, a porous substantially non-corrosive cathode spaced from the anode and a caustic fluid electrolyte between and contacting the anode and cathode, said electrolyte is a mixture of a base having equivalent ionic conductance value of 180 or higher when tested in concentrations of 0.5 M and an acid having equivalent ionic conductance values of 100 or higher when tested in concentrations of 0.5 M and proton transfer reactance (PK1) values less than 1.0; whereby no corrosion of the anode occurs when, by varying the proportioning of the base and acid, the PH of the electrolyte is at or below 7, no appreciable corrosion of the anode occurs when the PH of the electrolyte is between 7 and 14; and minor corrosion of the anode occurs when the PH of the electrolyte is above 14.